Catalogue of Type Specimens in the Vascular Plant Herbarium (DAO) - ( P )



Pachyloma setosum Wurdack, Mem. N.Y. Bot. Gard. 10(1): 107. 1958
Venezuela: Rio Guainia, Territorio Amazonas, east of Marva, Maguire et al. 41708, 6 Oct. 1957, Topotype

Paederia pringlei Greenm., Proc. Amer. Acad. 39: 92
Mexico: Morelos, near Yautapec, C.G. Pringle 8682, Oct. 1902, ? Type - Publication not Available

Paepalanthus polytrichoides Kunth var. glaber Moldenke, Bot. Mus. Harvard Univ. Leafl. 17: 66. 1955
Columbia: Vaupes, Rio Karuro, Schultes & Cabrera 19180, 15-16 April 1953, Isotype

Palicourea caloneura Rusby, Descriptions of Three Hundred New Species of South American Plants, p. 142. 1920
Columbia: Santa Marta, H.H. Smith 1808, (1898-1901), ? Isotype

Palicourea leuconeura Standley, Publ. Field Columbian Mus. Bot. Ser. 7: 137. 1930
Columbia: Santa Marta, H.H. Smith 1822, 1898-1901, ? Isotype

Panicum aculeatum Hitchc. & Chase, Rhod. 8: 209. 1906
U.S.A.: District of Columbia, Tacoma Park, A. Chase (Amer. Gr. Nat. Herb. 180), 17 July 1905, Topotype

Panicum acuminatum Swartz, Prodr. Veg. Ind. Occ. 23. 1788
Jamaica: Abbey Green in the Blue Mountains, A.S. Hitchcock (Amer. Gr. Nat. Herb. 133), 4 Oct. 1912, Topotype

Panicum altum Hitchc. & Chase, Contr. U.S. Nat. Herb. 17: 488-489
Panama: Point Chamé, A.S. Hitchcock 8167 (Amer. Gr. Nat. Herb. 507), 18 Sept. 1911, Isotype

Panicum amarulum Hitchc. & Chase, Contr. U.S. Nat. Herb. 15: 96. 1910
U.S.A.: Virginia, Lynnhaven, A.S. Hitchcock (Amer. Gr. Nat. Herb. 44), 2 Sept. 1905, Paratype

Panicum boreale Nash var. michiganense Farwell, Rhod. 42: 306-307. 1940
U.S.A.: Michigan, Keweenaw Co., Cliff Mine, O.A. Farwell 11355, 16 July 1936, Paratype

Panicum capillarioides Vasey, Contr. U.S. Nat. Herb. 1: 54. 1890
U.S.A.: Texas, Willacy Co., Sarita, A.S. Hitchcock (Amer. Gr. Nat. Herb. 32), 27 June 1910, Topotype

Panicum chapmanii Vasey, Bull. Torrey Bot. Club 11: 61. 1884
U.S.A.: Florida, shores of Manettee River, F. Rugel 394, 1842- 1849, Type Collection Material

Panicum crusgalli L. var. edulis Hitchcock, U.S. Dept. Agriculture Bull. 772: 238. 1920
U.S.A.: New Hampshire, Shelburne, A.S. Hitchcock (Amer. Gr. Nat. Herb. No. 430), 29 Aug. 1917, Type Collection Material

Panicum depauperatum Muhl. var. psilophyllum Fern. f. cryptostachys Fernald, Rhod. 23: 194. 1921
Canada: Nova Scotia, Middleton, Fernald et al. 19769, 20 July 1920, Isotype

Panicum dichotomiflorum Michx. var. puritanorum Svenson, Rhod. 22: 154. 1920
U.S.A.: Massachusetts, Half-way Pond, Barnstable, M.L. Fernald (Pl. ex. Gray 306), 13 Sept. 1919, Isotype

Panicum fasciculatum Swartz, Prodr. Veg. Ind. Occ. 22. 1788
Jamaica: Hope Gardens, near Kingston, A.S. Hitchcock (Amer. Gr. Nat. Herb. 5), 18 Oct. 1912, Topotype

Panicum ferventicola Schmoll, Madrono 5: 92. 1939
U.S.A.: Wyoming, 5 mi. N of Norris Geyser Basin, Yellowstone National Park, A. Chase (Amer. Gr. Nat. Herb. 137), 10 Aug. 1908, Isotype

Panicum ferventicola Schmoll var. papillosum Schmoll
Canada: Alberta, Banff, 31 July 1914, Madrono 5, 94-95, 1939, Isotype

Panicum filipes Scribn., Contr. Herb. Frankl. Marsh. Coll. 1: 13. 1895
U.S.A.: Texas, Corpus Christi, A.S. Hitchcock (Amer. Gr. Nat. Herb. 33), 27 June 1910, Topotype

Panicum firmulum Hitchc. & Chase, Contr. U.S. Nat. Herb. 15: 27. 1910
U.S.A.: Texas, Willacy Co., Sarita, A.S. Hitchcock (Amer. Gr. Nat. Herb. 3), 27 June 1910, Paratype

Panicum gouinii Fourn., Mex. Pl. 2: 28. 1886
Mexico: Vera Cruz, A.S. Hitchcock, (Amer. Gr. Nat. Herb. no. 40), 31 Aug. 1910, Topotype

Panicum grande Hitchc. & Chase, Contr. U.S. Nat. Herb. 17: 529. 1915
Panama: Gatun Lake, Canal Zone, A.S. Hitchcock 9178 (Amer. Gr. Nat. Herb. 545), 15 Dec. 1911, Isotype

Panicum hians Ell., Bot. S.C. & Ga. 1: 118-119. 1816
U.S.A.: South Carolina, Orangeburg, A.S. Hitchcock (Amer. Gr. Nat. Herb. no. 61), 15 Aug. 1905, Topotype

Panicum koolauense St. John & Hosaka, Occas. Pap. Bishop Mus. 11: 3. 1935
Hawaiian Islands: Oahu, Koolau Mts., F.R. Fosberg 13875 (Pl. ex. Gray 822), 23 May 1937, Topotype

Panicum lacustre Hitchc. & Ekman, U.S. Dept. Agr. Misc. Publ. 243: 253-254. 1936
Cuba: Laguna de la Maquina, Pinar del Rio City, E.L. Ekman (Amer. Gr. Nat. Herb. 1033), 31 Oct. 1923, Isotype

Panicum leibergii (Vasey) Scribn. var. baldwinii Lepage, Nat. can. 86: 67. 1959
Canada: Ontario, Mattice, E. Lepage 36091, 21 juillet 1958, Isotype

Panicum leonis Ekman, U.S. Dept. Agric. Misc. Publ. 243: 295.f. 286. 1936
Cuba: Cojimar, near Habana, E.L. Ekman (Amer. Gr. Nat. Herb. 1038), 9 Sept. 1921, Isotype

Panicum longifolium Torr. var. tusketense Fernald, Rhod. 23: 192. 1921
Canada: Nova Scotia, Gavelton Lake, Fernald & Long (Pl. ex. Gray 432), 13 Aug. 1921, Topotype

Panicum mayurensis Wright, Anal. Acad. Cienc. Habana 8: 206. 1871
Cuba: E.L. Ekman (Amer. Gr. Nat. Herb. 1022), 9 Sept. 1921, Topotype

Panicum millefolium Hitchc. & Chase, Contr. U.S. Nat. Herb. 17: 494. 1915
Panama: Frijoles, Canal Zone, A.S. Hitchcock 8387 (Amer. Gr. Nat. Herb. 509), 12 Oct. 1911, Isotype

Panicum mohavense J. Reeder, Phytologia 71: 300. 1991
U.S.A.: Arizona, Mohave Co., Main Stree Valley, R.K. Gierisch 4923, 6 Oct. 1986, Paratype, Topotype

Panicum molle Swartz, Prodr. Veg. Ind. Occ. 22. 1788
Jamaica: Hope Gardens, near Kingston, A.S. Hitchcock (Amer. Gr. Nat. Herb. 9), 1 Oct. 1911, Topotype

Panicum nodatum Hitchc. & Chase, Contr. U.S. Nat. Herb. 15: 293. 1910
U.S.A.: Texas, Willacy Co., Sarita, A.S. Hitchcock (Amer. Gr. Nat. Herb. 176), 27 June 1910, Topotype

Panicum ophiticola Hitchc. & Ekman, U.S. Dept. Agr. Misc. Publ. 243: 293. f. 282. 1936
Cuba: Province Habana, Minas, E.L. Ekman (Amer. Gr. Nat. Herb. 1034), 7 Sept. 1921, Topotype

Panicum oricola Hitchc. & Chase
U.S.A.: Virginia, Cape Henry, A. Chase 152, 24 June 1905, Paratype

Panicum oricola Hitchc. & Chase, Rhod. 8: 208. 1906
U.S.A.: Deleware, Lewes, A.S. Hitchcock 47 (Amer. Gr. Nat. Herb. 151), 18 June 1905, Isotype

Panicum pacificum Hitch. & Chase, Contrib. U.S. Nat. Herb. 15: 229. 1910
U.S.A.: Washington, Klickitat Co., Falcon Valley, W.N. Suksdorf 6292, 16 July 1908, Paratype

Panicum pacificum Hitchc. & Chase, Contr. U.S. Nat. Herb. 15: 229-230. 1910
U.S.A.: California, Shasta Co., Castle Crag, A.S. Hitchcock (Amer. Gr. Nat. Herb. 136), 3 Aug. 1908, Isotype

Pancium parcum Hitchc. & Chase, Contr. U.S. Nat. Herb. 15: 68. 1910
Mexico: State of Guerrero, Balsas, A.S. Hitchcock (Amer. Gr. Nat. Herb. 30), 9 Sept. 1910, Topotype

Panicum petersonii Hitchc. & Ekman, U.S. Dept. Agric. Misc. Publ. 243: 263 f. 220. 1936
Cuba: Province Pinar del Rio, Mendoza, E.L. Ekman (Amer. Gr. Nat. Herb. 1038), 16 Nov. 1923, Isotype

Panicum praecocius Hitchc. & Chase, Rhod. 8: 206. 1906
U.S.A.: Illinois, Stark Co., Wady Petra, V.H. Chase (Amer. Gr. Nat. Herb. 135), 17 June 1905, Topotype

Panicum rhizomatum Hitchc. & Chase, Contr. U.S. Nat. Herb. 15: 109. 1910
U.S.A.: South Carolina, Orangeburg, A.S. Hitchcock 450 (Amer. Gr. Nat. Herb. 55), 18 Aug. 1905, Isotype

Panicum stagnatile Hitchc. & Chase, Contr. U.S. Nat. Herb. 17: 528. 1915
Panama: Frijoles, Canal Zone, A.S. Hitchcock (Amer. Gr. Nat. Herb. 544), 12 Oct. 1911, Isotype

Panicum unciphyllum Trin. var. thinium Hitchc. & Chase, Rhod. 8: 209. 1906
U.S.A.: New Jersey, Egg Harbor, A. Chase (Amer. Gr. Nat. Herb. 530), 14 June 1916, Topotype

Panicum utowanaeum Scribn., Contr. U.S. Nat. Herb. 15: 24. 1910
Puerto Rico: Ensenada, Guanica Bay, A. Chase (Amer. Gr. Nat. Herb. 201), 14 Nov. 1913, Topotype

Panicum wilcoxianum Vasey var. breitungii Boivin
Canada: Saskatchewan, Macdowall, R.C. Russell S52022, 7 July 1952, Paratype; Goodwater, Hudson & Caolson 2089, 1 June 1961, Paratype; near Welby, southeast of Spy Hill, Dore & Boivin 13133, 7 July 1951, Paratype

Panicum wilcoxianum Vasey var. breitungii Boivin, Nat. can. 94: 526. 1967
Canada: Saskatchewan, Nisbet Provincial Forest, E of Prince Albert, Boivin & Breitung 6518, 20 June 1949, Holotype

Papaver cornwallisensis D. Löve, Bot. Not. 109: 176. 1956
Canada: Dist. of Franklin, Cornwallis Island, W.B. Schofield 90, 4 July 1949, Topotype

Papaver dahlianum Nordh. var. spitzbergensis Löve, Nytt. Magasin f. Botanikk 4: 14. 1955
SPITZBERGEN: Treurenberg, Hecla Cover, R. McCormick, 22 July 1827, Topotype

Papaver keelei A.E. Porsild, Nat. Mus. Can. Bull. 101: 20. 1945
Canada: Dist. of Mackenzie, Mackenzie Mts: 64º31'N 127º31'W, W.J. Cody 19055, 19 July 1970, Topotype

Papaver kluanensis D. Löve, Bot. Not. 109: 178. 1956
Canada: Yukon Terr., Slim's River, Mile 1060 Alaska Hy., J.O. Wheeler 32, 12 July 1953, Topotype

Papaver kluanensis D. Löve in Löve & Freedman, Bot. Nat. 109: 178-180. 1956
Canada: Yukon, Mt. Maxwell, Kluane National Park, G.W. Scotter 21137, 4 Aug. 1972, Topotype

Papaver mcconnellii Hulten, Fl. Alaska and Yukon 5: 803. 1945
Canada: District of Mackenzie, Richardson Mts. on Yukon- Mackenzie border, 67º33'N 136º12'W, J.A. Calder 34087, 8 July 1962, Topotype

Papaver nudicaule L. ssp. americanum Röndel, Feddes Repert. 88: 437. 1977
Canada: Yukon, S bank of Klondike River at Dawson, Calder & Billard 3943, 26 July 1949, Type Collection Material

Papaver stefanssonianum Löve, Nytt. Magasin for Botanikk 4: 14. 1955
Iceland: Patriksfjords, F.A. Walker, 24 June 1890, Topotype

Parathesis emarginata Lundell, Wrightia 3: 64. 1963
Columbia: Santa Marta, H.H. Smith 444, 1898-1901, ? Isotype

Parathesis reticulata Lundell var. sinuata Lundell, Wrightia 3: 72. 1963
Columbia: Santa Marta, H.H. Smith 1724, 1898-1901, ? Isotype

Parianarium pachyphyllum Rusby, Descriptions of Three Hundred New Species of South American Plants, pp. 26-27. 1920
Columbia: Santa Marta, H.H. Smith 1775 (1898-1901), ? Isotype

Parnassia caroliniana Michx. f. reducta Rousseau, Can. J. Res. Sec. C. 28: 242. 1950
Canada: Quebec, Anticosti, Rivière Jupiter, J. Rousseau 52,406, 21 juillet 1942, Isotype

Paronychia baldwinii Fenzl in Walpers, Rep. bot. syst. 1: 262. 1842
U.S.A.: Florida, Columbia Co., Lake City, G.V. Nash 2200, 11- 19 July 1895, Topotype

Paronychia canariensis Fuss., Mem. Mus. Par. 2: 390. 1815
Canary Islands: Nivaria, Taganana, E.R. Sventenius (Fl. Sel. Can. 20), 19 Feb. 1944, Topotype

Paronychia franciscana Eastwood, Bull. Torr. Bot. Club. 28: 288. 1901
U.S.A.: California, San Francisco, L.S. Rose 47100, 18 Apr. 1947, Topotype

Paronychia virginica Spreng., Syst. 1: 822. 1825
U.S.A.: West Virginia, Jefferson Co., Shenandoah River, E.T. Wherry (Pl. ex. Gray 1047), 1 Sept. 1940, Topotype

Parosela lasiostoma Rose, U.S. Dept. Agr. Contrib. Nat. Herb. 8: 305. 1905
Mexico: Hidalgo, near Tula, C.G. Pringle 8723, 14 Oct. 1902, Isotype

Parosela minutiflora Rose, Contrib. U.S. Nat. Herb. 8: 306. 1905
Mexico: Morelos, near Yautepec, C.G. Pringle 8721, 8 Nov. 1902, Isotype

Parosela spiciformis Rose, Contrib. U.S. Nat. Herb. 8: 303. 1905
Mexico: Guerrero, Los Amates Station, C.G. Pringle 10059, 21 Sept. 1905, Topotype

Parrya arctica R.Br., Chloris Melvilliana 11-12. 1824
Canada: Dist. of Franklin, Melville Island, Mosquin & Martin 6430, 22 July 1965, Topotype

Parrya arctica R.Br. f. albiflora Boivin
Canada: Franklin District, King William Island, 68º47'N 97º40'W, J. Woodruff 96, 10 Aug. 1949, Paratype

Parrya arctica R.Br. f. albiflora Boivin in Cody, Can. Field-Nat. 67: 42. 1953
Canada: Dist. of Franklin, Cambridge Bay, Sweatman & Smith 6, 2 July 1950, Holotype

Parrya nudicaulis (L.) Regel ssp. albiflora Cody
Canada: Yukon, Richardson Mountains, north side of Mt. Cronin, Cody & Ginns 30718, 7 July 1982, Paratype; Km 12½ Seagull Lake Road, V. Hodgson 776, 29 June 1982, Paratype

Parthenium lozanoanum Bartlett, Proc. Am. Acad. 44: 636. 1909
Mexico: Nuevo Leon, Hacienda, El Carrizo, C.G. Pringle 10247, 1 May 1906, Isotype

Parthenium tetraneuris Barneby, Leafl. West. Bot. 5: 19. 1947
U.S.A.: Colorado, Fremont Co., Beaver Creek, W.A. Weber, 13 May 1950, Topotype

Pasania edulis Makino, Publication unknown
Japan: Tokyo Pref. (cult.), T. Makino, 17 June 1908, ? Type Collection Material

Paspalum amphicarpum Ekman, Contr. U.S. Nat. Herb. 28: 161-162. 1929
Cuba: Pueblo Nuevo, Mangas, Pinar del Rio, E.L. Ekman 17565 (Amer. Gr. Nat. Herb. 958), 8 Oct. 1923, Isotype

Paspalum culiacanum Vasey, Contr. U.S. Nat. Herb. 1: 381. 1893
Mexico: mountains of Culiacan, Lodiego, E. Palmer 1647, 9-25 Oct. 1891, Isotype

Paspalum portoricense Nash, Bull. Torrey Bot. Club 30: 377. 1903
Puerto Rico: Monte Alegrillo, near Maricao, A. Chase (Amer. Gr. Nat. Herb. 570), 21 Oct. 1913, Topotype

Paspalum secans Hitchc. & Chase, Contr. U.S. Nat. Herb. 18: 319. 1917
Puerto Rico: Monte Mesa, A. Chase (Amer. Gr. Nat. Herb. 577), 25 Oct. 1913, Topotype

Paspalum serratum Hitchc. & Chase, Contr. U.S. Nat. Herb. 18: 06. 1917
Jamaica: Troy, A.S. Hitchcock 9795 (Amer. Gr. Nat. Herb. 562), 6 Nov. 1912, Isotype

Paspalum tinctum Chase, Contr. U.S. Nat. Herb. 28: 62. 1929
Mexico: Cuernavaca, Morelos, A.S. Hitchcock (Amer. Gr. Nat. Herb. 911), 11 Sept. 1910, Paratype

Pectis densa Rusby, Descriptions of Three Hundred New Species of South American Plants, p. 158. 1920
Columbia: Santa Marta, H.H. Smith 528 (1898-1901), ? Isotype

Pectis pringlei Fernald, Proc. Amer. Acad. 33: 76. 1898
Mexico: Coahuila, Jimulco, C.G. Pringle 10091, 10 Oct. 1905, Topotype

Pectis rosea Rusby, Descriptions of Three Hundred New Species of South American Plants, pp. 157-158. 1920
Columbia: Santa Marta, H.H. Smith 528 (1898-1901), ? Isotype

Pectocarya peninsularis I.M. Johnston, Journ. Arn. Arb. 20: 401- 402. 1939
Mexico: Baja California, 8 miles north of Hamilton Ranch, I.L. Wiggins 4291, 2 Mar. 1930, Paratype

Pedicularis altaica Steph. f. glabrata Krylov, Publication unknown
U.S.S.R.: Altai, P. Krylov, 1901, ? Type Collection Material

Pedicularis atrosanguinea Pennell & Thompson, Bull. Torrey Bot. Club 61: 443. 1934
U.S.A.: Washington, Clallam Co., Mt. Angeles, J.W. Thompson 7491, 18 July 1931, Topotype

Pedicularis elongata A. Kerner, Zeitschr. Ferd. Tirol III, 15: 260. 1870
Europe: Tiroliae australis in monte Serva Venetiae, Huter, (Fl. ex. Aust.-Hung. 634), ? Type - Publication not Available

Pedicularis fluviatilis Heller, Minn. Bot. Stud. 2: 33-34. 1898
U.S.A.: New Mexico, Santa Fe Canon, 9 miles east of Santa Fe, A.A. & E.G. Heller 3639, 2 June 1897, Isotype

Pedicularis lanata Cham. & Schlecht., f. alba Cody
Canada: Keewatin, Southampton Island, Coral Harbor near Munn Bay, 64°08'N 83°17'W, W.J. Cody 1249, 11 July 1948, Paratype

Pedicularis lanata Cham. & Schl. f. alba Cody, Can. Field-Nat. 65(4): 143. 1951
Canada: District of Keewatin, Southampton Island near Kirchoffer R., W.J. Cody 1146, 3 July 1948, Holotype

Pedicularis palustris L. f. laurentiana Vict. & Rouss., Contr. Inst. Bot. Montreal 36: 45. 1940
Canada: Quebec, Bonaventure Co., Newport, Victorin et al. 44899, 1 juillet 1931, Paratype

Pedicularis pennellii Hultén ssp. insularis Calder & Taylor
Canada: British Columbia, Queen Charlotte Islands, Graham Island, Mt. Hobbs, Empire Anchorage, Calder & Savile 21531, 14 June 1957, Paratype; Newton Point, west Skitegate Channel, Calder et al. 22978, 25 July 1957, Paratype; Moresby Island, Mosquito Lake near head of Cumshewa Inlet, Calder & Taylor 23725, 24 Aug. 1957, Paratype; mountain above west end of Mosquito Lake, Calder & Taylor 36450, 1 Aug. 1964, Paratype

Pedicularis pennellii Hultén ssp. insularis Calder & Taylor, Can. J. Bot. 43: 1399. 1965
Canada: British Columbia, Queen Charlotte Islands, Moresby Island, Calder et al. 21754, 25 June 1957, Holotype

Pedicularis rainierensis Pennell & Warren, Bull. Torrey Bot. Club 55: 317-318. 1928
U.S.A.: Washington, Pierce Co., Mount Rainier National Park, F.A. Warren 1498, 24 July 1931, Topotype

Pedicularis semibarbata Gray var. charlstonensis Pennell & Clokey
U.S.A.: Nevada, ridge south of Deer Creek, I.W. Clokey 7717, 23 May 1937, Paratype; Kyle Canyon, I.W. Clokey 7716, 22 June 1937, Paratype

Pedicularis semibarbata Gray var. charlestonensis Pennell & Clokey, Bull. So. Calif. Acad. Sci. 38: 6. 1939
U.S.A.: Nevada, Clark Co., Charleston Mts., Charleston Park, I.W. Clokey 7718, 11 May 1936 & 21 June 1937, Isotype

Pedicularis sudetica Willd. f. alba Cody, Can. Field-Nat. 65(4): 143. 1951
Canada: District of Keewatin, Southampton Island, Coral Harbor, W.J. Cody 1352A, 16 July 1948, Holotype

Pelea wawraeana Rock, Indig. Trees Hawaiian Islands, 231. 1913
Hawaiian Islands: Oahu, Koolau Range, Kahana Valley, F. Rathburn, 8 May 1949, Topotype

Pellaea gastonyi Windham
Canada: Saskatchewan, Cluff Lake area, 58°21'N 109°42'W, Polson & Hudson 36808, 24 Aug. 1978, Paratype; British Columbia, east shore of Columbia Lake, Taylor & Ferguson 3932, 20 Aug. 1958, Paratype

Pellaea gastonyi Windham, Contr. Univ. Mich. Herb. 19: 36. 1993
Canada: British Columbia, Kinbasket Mtn. by Kinbasket River, NW of Golden, J.A. Calder & D.B.O. Savile 11976, 17 Aug. 1953, Isotype

Penstemon abietinus Pennell, Cont. U.S. Nat. Herb. 20: 376. 1920
U.S.A.: Utah, Sevier Co., Sawtooth, 15 miles up Salina Canyon, D.D. Keck 681, 29 June 1930, Topotype

Penstemon acaulis Williams, Ann. Mo. Bot. Gard. 21: 345-346. 1934
U.S.A.: Wyoming, Southern Sweetwater Co., above McKinnon, Porter & Rollins 5657, 27 June 1951, Topotype

Penstemon alamosensis Pennell, Univ. Kansas Sci. Bull. 41(5): 709. 1960
U.S.A.: New Mexico, Sacramento Mts., Alamogordo, Rehn & Viereck, 5 May 1902, Paratype

Penstemon alluviorum Pennell in Small, Manual of Southeastern Flora 1203. 1933; Acad. Nat. Sc. Philad. Monog. 1, Scroph. 210. 1935
U.S.A.: Indiana, Crawford Co., 4[1/2] miles north of Milltown, C.C. Deam 20382, 22 June 1916, Paratype

Penstemon ambiguus Torr. ssp. laevissmus Keck, J. Wash. Acad. Sci. 29: 41. 1939
U.S.A.: Nevada, Clark Co., Wilson's Ranch, I.W. Clokey 8113, 7 June 1938, Isotype

Penstemon barnebyi N. Holmgr., Brittonia 31: 226. 1979
U.S.A.: Nevada, White Pine Co., north end of White River Valley, Holmgren & Holmgren 8492, 23 June 1977, Isotype

Penstemon berryi Eastwood, Bull. Torrey Bot. Club 32: 209-210. 1905
U.S.A.: California, Siskiyou Co., near Marble Canyon, H.P. Chandler 1599, June 1901, Paratype

Penstemon bicolor (Bdg.) Clokey & Keck ssp. roseus Clokey & Keck, Bull. So. Calif. Acad. Sci. 38: 12-13. 1939
U.S.A.: Nevada, Clark Co., Nelson, Larrea belt, I.W. Clokey 5850, 14 May 1938, Isotype

Penstemon caelestinus Pennell, Notular Naturae 95: 1-3. 1942
U.S.A.: Montana, Missoula County, Mount Sentinal, F.A. Barkley 2365, 26 May 1938, Paratype

Penstemon caudatus Heller, Minn. Bot. Studies 2: 34. 1898
U.S.A.: New Mexico, Taos Co., Barranca, A.A. & G. Heller 3581, 26 May 1897, Isotype

Penstemon collinus A. Nelson, Bull. Torrey Bot. Club 25: 279. 1898
U.S.A.: Wyoming, Uinta Co., Evanston, A. Nelson 7197, 14 June 1900, Topotype

Penstemon concinnus Keck, Amer. Midl. Nat. 23: 608-609. 1940
U.S.A.: Utah, west side of Tunnel Spring Mountain, Holmgren & Reveal 2578, 27 May 1966, Topotype

Penstemon confertus Dougl. var. aberrans M.E. Jones, Proc. Calif. Acad. Ser. 2, 5: 715. 1895
U.S.A.: Utah, Fish Lake, M.E. Jones 5740, 8-4-1894, Isotype

Penstemon crassifolius Shuttl. ex Benth. in DC. Prodr. 10: 327. 1846
U.S.A.: Florida, near Shellpoint, Rugel, July 1843, ? Isotype

Penstemon davidsonii Greene var. praeteritus Cronq.
U.S.A.: Oregon, Harney County, Alvord Creek, A. Cronquist 8576, 30 June 1959, Paratype

Penstemon davidsonii Greene var. praeteritus Cronq., Leafl. West. Bot. 10: 129. 1964
U.S.A.: Nevada, Humboldt Co., Pine Forest Mts., 75 miles northwest of Winnemucca, A. Cronquist 8622, 6 July 1959, Isotype

Penstemon deamii Pennell, Monog. Acad. Nat. Sci. Philad. No. 1: 212. 1935
U.S.A.: Indiana, Clark Co., Forest Reserve, C.C. Deam 20335, 20 June 1916, Topotype

Penstemon dolius Jones var. duchesnensis N. Holm., Brittonia 10: 219-220. 1979
U.S.A.: Utah, Duchesne Co., US #40, 3.8 miles east of Duchesne, Holmgren et al. 1787, 3 June 1965, Isotype

Pentstemon dolius var. duchesnensis N. Holmgren
Corrections to previous text: 16 km east of Duchesne and Holmgren et al. should be 8762 and date should be 25 May 1978
U.S.A.: Utah, 3.8 miles east of Duchesne, Holmgren et al. 1787, 3 June 1965, Paratype

Penstemon euglaucus English, Proc. Biol. Soc. Wash. 41: 197-198. 1928
U.S.A.: Oregon, Mt. Hood, summit of Blue Grass Ridge, J.W. Thompson 5091, 22 July 1928, Topotype

Penstemon exifolius A. Nelson, Bull. Torrey Bot. Club 28: 230- 231. 1901
U.S.A.: Wyoming, Albany Co., Halleck Canyon, A. Nelson 7460, 6 July 1990, Isotype

Penstemon fendleri Torrey & Gray, Pacific Rail. Rep. 2: 168. 1857
U.S.A.: New Mexico, Santa Fe Co., Santa Fe, A.A. & E.G. Heller 3520, 13 May 1897, Topotype

Penstemon francisci-pennellii Crosswhite, Leafl. West. Bot. 10: 170. 1965
U.S.A.: Nevada, White Pine Co., Snake Range, N. Wheeler Pk., B. Maguire 21140, 4 Aug. 1941, Paratype

Penstemon garretti Pennell, Contr. U.S. Nat. Herb. 20: 353-354. 1920
U.S.A.: Utah, Wasatch Co., Large Hot Pot near Midway, D.D. Keck 718, 2 July 1930, Topotype

Penstemon goodrichii N. Holmgr., Brittonia 30: 416. 1978
U.S.A.: Utah, Uintah Co., Uinta Basin, east of Lapoint on bluffs of Halfway Hollow, Holmgren et al. 8760, 25 May 1978, Isotype

Penstemon gracilis Nutt. f. scogganii Boivin, Phytologia 22: 331. 1972
Canada: Manitoba, Réserve Forestière Whiteshell, Boivin & Laishley 13092, 26 juin 1959, Holotype

Penstemon immanifestus N. Holmgr., Brittonia 30:334-339. 1978
U.S.A.: Nevada, White Pine Co., Steptoe Valley, Holmgren & Holmgren 8493, 22 June 1977, Isotype

Penstemon incertus Brand., Bot. Gaz. 27: 454-455. 1899
U.S.A.: California, Kern Co., Walker Pass, L.S. Rose 62041, 21 May 1962, Topotype

Penstemon keckii Clokey
U.S.A.: Nevada, Clark County, Charleston Peak, I.W. Clokey 5592, Paratype

Penstemon keckii Clokey, Madrono 4: 128-130. 1937
U.S.A.: Nevada, Clark Co., Lee Canyon, I.W. & C.B. Clokey 7312, 3 July 1936 (Pl. Ex. Gray 766), Isotype

Penstemon moriahensis N. Holmgr., Brittonia 30: 422-424. 1978
U.S.A.: Nevada, White Pine Co., northern Snake Range, south of road to Mt. Moriah, Holmgren & Holmgren 8609, 17 July 1977, Isotype

Penstemon navajoa N. Holmgr., Brittonia 30: 419-421. 1978
U.S.A.: Utah, San Juan Co., Navajo Mountain, Holmgren & Holmgren 8587, 13 July 1977, Isotype

Penstemon neotericus Keck, Univ. Cal. Pub. Bot. 16: 398. 1932
U.S.A.: California, Sierra Nevada, Plumas Co., halfway between Chester and Westwood, D.D. Keck 958, 24 July 1930, Isotype

Penstemon nitidus Dougl. ex Benth. ssp. polyphyllus Pennell, Not. Nat. Acad. Nat. Sci. Philad. 95: 6: 1942
U.S.A.: Montana, Granite Co., 70 miles east of Missoula, E.A. Ducker 2324, 19 May 1938, ? Type - Publication not Available

Penstemon pahutensis N. Holmgr., Aliso 7: 351-355. 1971
U.S.A.: Nevada, Nye Co., Nevada Test Site 5.3 miles up Ranier Mesa Road, J.L. Reveal 1206, 10 June 1968, Isotype

Penstemon palmeri Gray var. bicolor T.S. Brandegee, Univ. Calif. Pub. Bot. 6: 360. 1916
U.S.A.: Nevada, Clark Co., Larrea belt, I.W. Clokey 5847, 2 May 1938, Topotype

Penstemon patricus N. Holmgr., Brittonia 31: 238-239. 1979
U.S.A.: Utah, Juab Co., Deep Creek Range, Thomas Creek Canyon, Holmgren et al. 9018, 16 July 1978, Isotype

Penstemon procerus Dougl. f. albescens Boivin, Nat. can. 93: 1062. 1966
Canada: Yukon Territory, Watson Lake, J.M. Gillett 3628, 7 July 1949, Holotype

Penstemon procerus Douglas f. jenkinsii Boivin, Nat. can. 87: 43. 1960
Canada: Saskatchewan, Kindersley District, P.F.R.A. pasture northwest of Hoosier, L. Jenkins 887, 9 July 1951, Holotype

Penstemon pudicus Reveal & Beatley, Bull. Torrey Bot. Club 98: 332-333. "1971", 1972
U.S.A.: Nevada, Nye Co., Kawich Range, 17.5 airline miles south of Warm Springs, Holmgren et al. 5227, 26 June 1971, Paratype

Penstemon richardsonii Doug. in Lindl. ssp. dentatus Keck, Brittonia 8: 250. 1957
U.S.A.: Oregon, Wheeler Co., 3 miles southwest of Painted Hills, A. Cromquist 7260, 24 June 1953, Isotype

Penstemon smallii Heller, Bull. Torrey Bot. Club 21: 25-26. 1894
U.S.A.: North Carolina, Caldwell Co., Blowing Rock, A.A. Heller 1369, 24 June 1893, Topotype

Penstemon tusharensis N. Holmgr., Brittonia 31: 106. 1979
U.S.A.: Utah, Beaver Co., Tushar Plateau, east of Beaver, Holmgren & Holmgren 8576, 10 July 1977, Topotype

Pentapanax granatensis Rusby, Descriptions of Three Hundred New Species of South American Plants, pp. 72-73. 1920
Columbia: Santa Marta, H.H. Smith 1595 22 Mar. (1898-1901), Isotype

Pentopetia androsaemifolia DC, Prodr. 8: 500. 1844
Madagascar: Carion, Decary 6024, 30 Oct. 1927, Topotype

Peperomia angulata HBK. var. parviflora C. DC., Ann. Conserv. & Jard. Bot. Geneve 21: 244. 1920
Columbia: Santa Marta, H.H. Smith 2111, 1898-1901, Isotype

Peperomia angustata HBK. var. santamartae C.D.C., Candollea 1: 306. 1923
Columbia: Santa Marta, H.H. Smith 1254, 1898-1901, ? Isotype

Peperomia cookiana DC., Prodr. 16(1): 450. 1869
Hawaiian Islands: Kona, south of Papalva, Degener & Murashige 20,334, 13 Aug. 1949, Topotype

Peperomia hawaiensis C. DC., Coll. Hawaii Publ. 2: 14. 1913
Hawaiian Islands: Hilo, Degener et al. 20,283, 29 Aug. 1949, Topotype

Peperomia herbert-smithii Trel. & Yuncker, Piperaceae No. S. S. Amer. 2: 630-631. fig. 552. 1950
Columbia: Magdalena, Santa Marta, H.H. Smith 1911, 1898-1901, ? Isotype

Peperomia kokeana Yuncker, Bull. Bishop Mus., Honolulu 112: 50. 1933
Hawaiian Islands: Kauai, Kokee, Degener & Hatheway 20,483, 1 Feb. 1950, Topotype

Peperomia leoclemerocana Trel., Bull. Torrey Bot. Club 51: 2. 1924
Cuba: Sierra Maestra Mts., T.G. Yunchker 12491, 8/3/1948, Topotype

Peperomia sandwicensis Miq., Syst. Pip. I p. 126. 1843
Hawaiian Islands: Oahu, Puu Hapapa, Degener et al. 21068, 22 Oct. 1950, Topotype

Perezia lozani Greenm., Proc. Amer. Arts & Sci. 41: 268-269. 1905
Mexico: Hidalgo, between Metepec and Zontecomate Stations, C.G. Pringle 8871, 19 Sept. 1904, Isotype

Perezia michoacana Robinson, Proc. Amer. Acad. 27: 179. 1892
Mexico: Michoacan, Jesus del Monte near Morelia, C.G. Pringle 10410, 29 Nov. 1907, Topotype

Pericome glandulosa Goodman, Rhod. 39: 209-210. 1937
U.S.A.: Oklahoma, Cimarron Co., Kenton, Goodman & Kelting 5347, 18 Aug. 1950, Topotype

Perideridia bacigalupi Chuang & Constance, U. Cal. Pub. Bot. 55: 36. 1969
U.S.A.: California, Nevada Co., 5.5 miles NW of Nevada City, Chuang & Constance 5966, 2 July 1964, Topotype

Perideridia bolanderi (A. Gray) Nelson & Macbride ssp. involucrata Chuang & Constance, Univ. Calif. Pub. Bot. 55: 47. 1969
U.S.A.: California, Nevada Co., 1.9 miles S of Bridgeport, Chuang & Constance 5968, 2 July 1964, Topotype

Perideridia gairdneri (Hook. & Arn.) Mathias ssp. borealis Chuang & Constance, U. Cal. Pub. Bot. 55: 59. 1969
U.S.A.: California, Modoc Co., ¼ mile west of Lily Lake, Chuang & Gleason 5930, 23 Aug. 1936, Paratype

Perideridia leptocarpa Chuang & Constance, U. Cal. Pub. Bot. 55: 51-53. 1969
U.S.A.: California, Siskiyou Co., 1 mile N of Cecilville, Chuang et al. 6045, 15 June 1966, Topotype

Periploca laevigata Ait., Hort. Kew. ed. I 1: 301. 1789
Canary Islands: Tenerife, Santa Ursula, E. Asplund 154, 8 Mar. 1933, Topotype

Pernettya mexicana Camp, Bull. Torrey Bot. Club 66: 24. 1939
Mexico: Oaxaca, Zempoaltepetl, W.H. Camp 2652, 19-27 Feb. 1937, Isotype

Perotis Cubana Wright, Anal. Acad. Cienc. Habana 8: 288. 1871
Cuba: El Cobre, Oriente, E.L. Ekman (Amer. Gr. Nat. Herb. 796), 10 Nov. 1922, Topotype

Perrottetia sandwicensis A. Gray, Bat. U. St. Expl. Exped. 1: 291. 1854
Hawaiian Islands: Manoa Valley, C. Wong 35, 7 Nov. 1944, Topotype

Persea humilis Nash, Bull. Torr. Bot. Club 22: 157. 1895
U.S.A.: Florida, Lake Co., Eustis, G.V. Nash 574, 1-15 May 1894, Type Collection Material

Perymenium jaliscense Rob. & Greenman, Amer. J. Sci. 30: 154. 1895
Mexico: Jalisco, Sierra de San Eseban near Guadalajera, C.G. Pringle 11818, 21 Oct. 1903, Topotype

Perymenium macrocephalum Greenman, Proc. Am. Acad. 39: 108. 1903
Mexico: Guerrero, Iguala Canyon, C.G. Pringle 10385, 24 July 1907, Topotype

Petasites arcticus Porsild, Sargentia 4: 74. 1943
Canada: District of Mackenzie, Reindeer Station, Cody & Ferguson 9649, 20 June 1957, Topotype

Petasites officinalis L. var. wallrothianum O. Kuntze, Publication unknown
Europe: Kadretica, O. Kuntze, 1886, ? Type Collection Material

Petesia coriacea Hook. & Arn., Bot. Beech. Voy. 85. 1832
Hawaiian Islands: Head of Kalihi Valley, Christopherson et al. 1484, 25 Jan. 1931, Topotype

Petrosimonia diandra D. Litw., Schedae Herb. Fl. Ross. 2371. 1911
U.S.S.R.: Prov. Irkutsk, distr. Balagansk, 16 Aug. 1909, Isotype

Petrosimonia litwinowi Korsh. var. diffusa Litw., Publication unknown
Europe: Prov. Samara, distr. Nikolajewsk, D. Sofinski 2035a, 19 Aug. 1905, ? Type Collection Material

Peucedanum sandwicense Hillebr., Fl. Haw. Is. 144. 1888
Hawaiian Islands: Molokai, Trail leading to Kalaupapa, Degener & Tam 22139, 17 Mar. 1952, Topotype

Pfaffia eriocephala Suesseng, Repert. Spec. Nov. Regni Veg.
Columbia: Santa Marta, H.H. Smith 2095, 1898-1901, ? Isotype

Phaca macrocarpa Gray, Pl. Fendl. p. 36. 1849
U.S.A.: New Mexico, Santa Fe, A.A. & E.G. Heller 3604, 28 May 1897, Topotype

Phacelia californica Cham., Linnaea 4: 494. 1829
U.S.A.: California, San Francisco, Twin Peaks, L.S. Rose 48025, 26 Mar. 1948, Topotype

Phacelia californica Cham. f. bernardina Macbr., Contrib. Gray Herb. n.s. 49: 36. 1917
U.S.A.: California, San Bernardino Co., San Bernardino Mts., A.R. Kruckeberg 3827, 27 June 1955, Topotype

Phacelia franklinii (Br.) Gray f. variegata Boivin, Nat. can. 87(2): 43. 1960
Canada: Ontario, Thunder Bay District, Round Lake, Garton & Campbell 1211, 25 July 1950, Holotype

Phacelia geraniifolia Brand, Beitrage 2 Kenntnis den Hydrohyll. 7. 1911
U.S.A.: Nevada, NE Las Vegas Valley, J.L. Reveal 1295, 13 June 1968, Topotype

Phacelia lutea (Hook. & Arnott) J.T. Howell var. calva Cronq., Vasc. Pl. Pacific Northwest 4: 168. 1959
U.S.A.: Idaho, Owyhee Co., 26 mi. SW of Marsing, A. Cronquist 8382, 9 June 1959, Topotype

Phacelia serrata Voss, Bull. Torrey Bot. Club 64: 88. 1937
U.S.A.: Arizona, Coconino Co., Sunset Crater National Monument, Howell & True 45184, 12 Sept. 1968, Topotype

Phacelia splendens Eastwood, Zoe 4: 9. 1893
U.S.A.: Colorado, 24 miles NW of Grand Junction, W.A. Weber 7384, 11 May 1952, Topotype

Phacelia stebbinsii Const. & Heck., Brittonia 22: 27-29. 1970
U.S.A.: California, Eldorado Co., Silver Creek, Constance & Stebbins 3871, 29 June 1969, Paratype

Phacelia strictiflora (Engelm. & Gray) A. Gray var. connexa Constance, Contrib. Gray Herb. 168: 19-20. 1949
U.S.A.: Texas, Grayson Co., southwest part of Denison, Constance & Lundell 3254, 15 Apr. 1948, Paratype

Phalangium algeriense Boiss. & Reut., Pugill. Pl. Nov. 115. 1852
Algeria: près du Fort-de-l'Eau, A. Dubois, 1 avril 1959, ? Topotype

Phaseolus lozanii Rose, Contr. U.S. Nat. Herb. 12: 274. 1909
Mexico: Michoacan, near Cornu Station, C.G. Pringle 10358, 23 Jan. 1907, Isotype

Phaseolus peduncularis H.B.K. var. pusillus Hassler, Candollea 1: 436. 1923
Columbia: Santa Marta, H.H. Smith 2052, 1898-1901, ? Isotype

Phaseolus smilacifolius Pollard, Bot. Gaz. 21: 233. 1896
U.S.A.: Florida, Columbia Co., Lake City, G.V. Nash 2505, 29- 31 Aug. 1895, Isotype

Phebalium buckinghamii Blakely, Austral. Nat. 10: 246. 1940
Australia: New South Wales, Gold Gully, Penrose, W.F. Blakely et al., 15 Oct. 1938, Paratype

Philadelphus microphyllus A. Gray, Mem. Am. Acad. N.S. 4: 54. 1849
U.S.A.: New Mexico, Santa Fe Canon, 9 mi. E of Santa Fe, A.A. & E.G. Heller 3792, 2 July 1897, Topotype

Philibertella filipes Rusby, Descriptions of Three Hundred New Species of South American Plants, 94. 1920
Columbia: Santa Marta, H.H. Smith 1669 (1898-1901), ? Isotype

Phlojodicarpus baicalensis M. Pop., Spisok Rast. Herb. Fl. URSS 8: 32. 1955
U.S.S.R.: Lac Baical, S. Popova (Fl. ex. USSR 3843), July-Aug. 1952, ? Isotype

Phlox diffusa Bentham ssp. subcarinata Wherry, Jour. Wash. Acad. Sci. 29: 517. 1939
U.S.A.: Nevada, Washoe Co., Slide Mountain, L.S. Rose 63208, 11 July 1963, Topotype

Phlox dispersa Sharsmith, Aliso 4: 138. 1958
U.S.A.: California, Tulare Co., Cirque Peak, J.T. Howell 26183, 9 Aug. 1949, Paratype

Phlox nana Nutt., Journ. Acad. Philad. NS 1: 153. 1847
U.S.A.: New Mexico, canon one mile southeast of Santa Fe, A.A. & E.G. Heller 3560, 21 May 1897, Topotype

Phoradendron degenianum Trel., Phoradendron 119. 1916
Columbia: Santa Marta, H.H. Smith 1285, 1898-1901, ? Isotype

Phoradendron exiguum Trel., Phoradendron 81: 1916
Columbia: Santa Marta, H.H. Smith 1281, 1898-1901, ? Isotype

Phoradendron herbert-smithii Trelease, Monog. Phoradendron 80-81. 1916
Columbia: Santa Marta, near Bonda, H.H. Smith 1283, 1898-1901, ? Isotype

Photinia ×fraseri W.J. Dress cv. 'Birmingham', Baileya 9: 101-103. 1961
Cultivated: Fraser Nursery, Birmingham, Alabama, U.S.A., Meyers & Mazzeo 11016, 11 Nov. 1968, Hortotype

Phyllanthus ferax Standley, Publ. Field Mus. Nat. Hist., Chicago, Bot. Ser. 11: 134. 1932
British Honduras: El Cayo District, H.H. Bartlett 12933, 13 Apr. 1931, Paratype

Phyllanthus heteromorpha Rusby, Descriptions of Three Hundred New Species of South American Plants, pp. 42-43. 1920
Columbia: Santa Marta, H.H. Smith 1716 (1898-1901), ? Isotype (fl.)

Phyllanthus heteromorpha Rusby, Descriptions of Three Hundred New Species of South American Plants, pp. 42-43. 1920
Columbia: Santa Marta, H.H. Smith 410 (1898-1901), ? Isotype (fr.)

Phyllanthus sandwicensis Muel. Arg., Linnaea 32: 31. 1863
Hawaiian Islands: Oahu, Hapapa, Degener et al. 12360, 4 June 1939, Topotype

Phyllarthron bernierianum Seem., Bonplandia 7: 224. 1859
Madagascar: Imborombe, M.R. Decary 8362, ? Type - Publication not Available

Phyllis viscosa (Webb.) Christ, Bot. Jahrb. 9: 144. 1887
Canary Islands: Tenerife, E. Asplund 1268, 13 May 1933, Topotype

Phyllitis scolopendrium (L.) Newm. var. americanum Fern., Rhod. 37: 220. 1935
Canada: Ontario, Owen Sound, Inglis Falls, S.J. English, 9 Aug. 1930, Topotype

Phyllodoce nipponica Makino, Bot. Mag. Tokyo 19. 131. 1905
Japan: Mt. ShIrane, Nikko City, Tochigi Pref., T. Makino, 17 July 1924, Topotype

Phyllostegia grandiflora Benth., Bot. Reg. sub. t. 1292. 1829
Hawaiian Islands: Oahu, Koolau Range, F. Rathburn, 20 Feb. 1949, Topotype

Phyllostegia hirsuta Benth., Bot. Reg. sub. t. 1292. 1829
Hawaiian Islands: Oahu, northeast ridge of Pau, Degener et al. 12701, 31 Mar. 1940, Topotype

Phyllostegia hirsuta Benth. var. laxior Degener & Sherff, Fl. Haw. 316. 1946
Hawaiian Islands: Oahu, Anahulu Trail, Degener & Foster 12307, 23 March 1939, Topotype

Phyllostegia lantanoides Sherff, Bot. Gaz. 96: 137. 1934
Hawaiian Islands: Oahu, Koolau Range, F. Rathburn, 20 Feb. 1949, Topotype

Physalis arenicola Kearney, Bull. Torrey Bot. Club 21: 485. 1894
U.S.A.: Florida, Lake Co., Eustis, G.V. Nash 1170, 1-15 July 1894, Type Collection Material

Physalis chamaesarachoides Makino, Bot. Mag. Tokyo 22: 34-36, 1908
Japan: Kumamoto Pref., Mt. Fukaba, Aso-machi, Aso-gun, T. Makino, Aug. 1907, Type Collection Material

Physalis cuneata Rusby, Descriptions of Three Hundred New Species of South American Plants, pp. 118-119. 1920
Columbia: Santa Marta, H.H. Smith 1482 (1898-1901), ? Isotype

Physalis virginiana Mill. var. hispida Waterfall, Rhod. 60: 154- 156. 1958
U.S.A.: Wyoming, Platte Co., 10 miles S of Guernsey, C.L. Porter 4894, 16 June 1949, Paratype

Physaria acutifolia Rydb., Bull. Torr. Bot. Club 18: 279. 1901
U.S.A.: Colorado, Mesa Co., 3 mi. S of Fruita, Shushan & Weber 9039, 12 May 1955, Topotype

Physaria bellii Mulligan, Can. J. Bot. 44: 1662. 1966
U.S.A.: Colorado, Boulder Co., 4/ mi. N of Boulder, Mulligan & Crompton 2898, 24 Aug. 1964, Holotype

Physaria condensata Rollins, Rhod. 41: 407. 1939
U.S.A.: Wyoming, Uinta Co., 3 mi. W of Fort Bridger, R.C. Rollins 2385, 24 June 1938, Isotype

Physaria didymocarpa (Hook.) Gray var. integrifolia Rollins, Rhod. 41: 403. 1939
U.S.A.: Wyoming, Lincoln Co., [1/2] mi. E of Afton, Mulligan & Crompton 3088, 10 July 1965, Topotype

Physaria floribunda Rydb., Bull. Torr. Bot. Club 18: 279. 1901
U.S.A.: Colorado, Costilla Co., 8/ mi. NE of Fort Garland, Mulligan & Crompton 3063, 5 July 1965, Topotype

Physaria geyeri (Hook.) Gray var. purpurea Rollins, Rhod. 41: 401. 1939
U.S.A.: Idaho, Custer Co., 1 mile east of Bonanza, Mosquin & Gillett 5445, 4 Aug. 1963, Topotype

Physaria obcordata Rollins, J. Arn. Arb. 64: 495. 1983
U.S.A.: Colorado, Rio Blanco Co., TS2, R97W, Rollins & 8390, 20 June 1983, Topotype

Physaria rollinsii Mulligan, Can. J. Bot. 44: 1663-1664. 1966
U.S.A.: Colorado, Gunnison Co., 4 mi. NW of Doyleville, Mulligan & Crompton 2880, 21 Aug. 1964, Holotype

Physaria saximontana Rollins, Contr. Gray Herb. 214: 13. 1984
U.S.A.: Wyoming, Fremont Co., Lander, Rollins & Rollins 81374, 20 June 1981, Isotype

Physaria vitulifera Rydb., Bull. Torr. Bot. Club 28: 278. 1901
U.S.A.: Colorado, Clear Co., Idaho Springs, Mulligan & Crompton 2850, 18 Aug. 1964, Topotype

Physostegia granulosa Fassett, Rhod. 41: 377. 1939
Canada: Quebec, tidal flat of St. Lawrence estuary above Quebec Bridge [Cap Rouge], W.G. Dore 47-967, 31 Aug. 1957, Topotype

Physostegia virginiana (L.) Benth. var. arenaria Shimek, Bull. Lab. Nat. Hist. Iowa St. Univ. 6(2): 223. 1911
U.S.A.: Iowa, near Fruitland, B. Shimek, 25 Sept. 1909, Lectotype

Physostegia virginiana (L.) Bentham var. ledinghamii Boivin (P. ledinghamii (Boivin) Cantino)
Canada: Mackenzie, Salt River, 60°06'N 112°15'W, Cody & Loan 4483, 16 July 1950 Paratype; same locality, Cody & Loan 4596, 20 July 1950, Paratype; same locality, C.C. Loan 137, 7 Aug. 1950, Paratype; Manitoba, Carrot River District, north of The Pas, C. Frankton 1220, 19 Aug. 1950, Paratype; 10 miles SW of Winnipeg, W.G. Dore 12746, 20 Aug. 1950, Paratype; Saskatchewan, Battleford, G.F. Ledingham 47-125, 2 Aug. 1947, Paratype; Reserve, Pas Lumber Co. Camp, J.S. Rowe 239, 17 July 1949, Paratype; Tisdale, along the Doghide River, A.J. Breitung 1790, 15 Aug. 1943, Paratype; Tantallon, D.R. Robinson S-4608, 23 July 1946, Paratype; 1½ miles south of Eldersly along Miner's Creek, A.J. Breitung 685, 21 July 1940, Paratype; North Battleford, flats of North Saskatchewan River, Boivin & Breitung 6782, 2 Aug. 1949, Paratype; Beauvel, 150 miles north of Meadow Lake, A.J. Breitung 8371, 14 Aug. 1949, Paratype; Meadow Lake, A.J. Breitung 8331, 12 Aug. 1949, Paratype; south of North Battleford, C. Frankton 945, 17 July 1949, Paratype; Payton Crossing, Frankton & Bibbey 384, 14 July 1974, Paratype; Langham, W.P. Fraser s.n., 23 Aug. 1937, Paratype; Burgis, Sallans & Russell S-1177, 1 July 1943, Paratype; Yorkton, C. Shaw 155, 26 July 1946; Alberta, 12 miles northeast of Fort Sasktchewan, G.H. Turner 3211, 22 Aug. 1942, Paratype; Fort Saskatchewan, G.H. Turner 32, 3 Aug. 1938, Paratype

Physostegia virginiana (L.) Benth. var. elongata Boivin, Nat. can. 93: 573. 1966
Canada: Quebec, Ile Perrot, Marie-Victorin & Rolland-Germain 29005, 1 Sept. 1927, Holotype

Physostegia virginianum (L.) Benth. var. ledinghamii Boivin, Nat. can. 93: 574. 1966
Canada: Saskatchewan, platière de la Saskatchewan du Sud, Boivin & Alex 9978, 28 juillet 1952, Holotype

Physostegia virginiana (L.) Benth. var. reducta Boivin, Nat. can. 93: 572-573. 1966
U.S.A.: Indiana, Cass Co., Lake Cicott, R.C. Friesner 10132, 26 Sept. 1936, Holotype

Phyteuma vagneri A. Kern., Sched. Fl. Austr.-Hung. 3: 107. 1884
Hungary: Marmaros, in graminosis alpinis montis Blisnicza prope Korosmezo, Vagner (Fl. Ex. Aust-.Hung. 964), Isotype

Pieris taiwanensis Hayata, Jour. Coll. Sc. Tokyo 30, Art. 1, 169. 1911
Taiwan: Mt. Morrison, T.S. Liu, 23 Aug. 1949, Topotype

Pilea apiculata Killip, Contr. U.S. Nat. Herb. 26: 390. 1936
Columbia: Santa Marta, H.H. Smith 1430, 1898-1901, ? Isotype

Pilosella officiarum-auricula Schulz, Flora 1862 p. 425, 432
Germany: entre Bergzabern et Candel, F. Schultz, (Herb. norm. 700), 15 June 1861, ? Isotype

Pilosella villarsii F. Schultz, Flora 424. 1862
Austria: bords du Rhin entre Woerth et Rheinzabern, P. Müller & F. Schultz (F. Schultz herb. norm 701, 22 mai 1862, Topotype

Pilostyles thurberi Gray, Mem. Am. Acad. N.S. 5: 326. 1855
U.S.A.: Arizona, Yuma Co., near Dome, R.H. Peebles 6794, 12 Apr. 1930, Topotype

Pimelea flava R. Brown, Prodr. 361. 1810
Australia: Port Dalrymple, R. Brown, 1802-5, Type Collection Material

Pimelea glauca R. Brown, Prodr. 360. 1810
Australia: River Nepean, R. Brown, 1802-5, Type Collection Material

Pimelea octophylla R. Brown, Prodr. 361. 1810
Australia: Port Philip, R. Brown, 1802-5, Type Collection Material

Pimpinella buchii Webb & Berth., Phyt. Canar. 2: 151
Canary Islands: Nivaria, supra Aguamansa, E.R. Sventenius 154, 21 June 1949, Topotype

Pimpenella dendroselinum Webb & Berth., Phyt. Canar. 2: 152
Canary Islands: Nivaria, Las Canadas, E.R. Sventenius 56, 28 Apr. 1954, Topotype

Pinus arizonica Engelm., Rothr., Wheeler, U.S. Geogr. Surv. West 100th Meridian Rep. 6: 260. 1878
U.S.A.: Arizona, Chiricahua Mts., J.C. Blumer 1328, 20 Oct. 1906, Topotype

Pinus attenuradiata Stockwell & Righter, Madrono 8: 160. 1946
U.S.A.: California, Eldorado Co., Placerville, Eddy Arboretum (cult.), Stockwell & Kimbrough 2012, 21 Aug. 1945, Isotype (2 SHEETS)

Pinus canariensis C. Sm., Buch, Beschr. Canar. Ins. 159
Canary Islands: Tenerife in vicin. pag. Santa Ursula, E. Asplund 111, 6 Mar. 1933, Topotype

Pinus divaricata Dumont var. ×musci Boivin, Nat. can. 93: 272-273. 1966
Canada: Alberta, Graminia, southwest of Edmonton, E.H. Moss 8719, 16 Oct. 1948, Holotype

Pinus nigricans Host, Fl. Austr. 2: 628. 1831
AustriaInferior: Modling, F.A. Tscherning, May 1889, Topotype

Pinus pringlei Shaw, Sargent, Trees and Shrubs 1: 211 pl. 100. 1906
Mexico: Uruapan, C.G. Pringle 10019, 14 Oct. 1904, Isotype

Pinus washoensis Mason & Stockwell, Madrono 8: 62. 1945
U.S.A.: Nevada, Washoe Co., Mount Rose, Sierra Nevada, Stockwell & Cumming 1455, 18 July 1939, Paratype and Topotype

Piper pitalitoense Yuncker, Piperac. No. South Amer. 309. 1950
Columbia: Huila, Pitalito, Quinche, Schultes & Villarreal 5101, 30 Dec. 1942, Isotype

Piper puberulibracteum C.DC., Ann. Conserv. & Jard. Bot. Genève 21: 232. 1920
Columbia: Santa Marta, H.H. Smith 1237, 1898-1901, ? Isotype

Piper salinasanum C.DC. var. parvifolium C.DC., Ann. Conserv. & Jard. Bot. Genève 21: 234. 1920
Columbia: Santa Marta, H.H. Smith 1223, 1898-1901, ? Isotype

Piper santa-martanum C. DC., Ann. Conserv. & Jard. Bot. Genève 21: 231. 1920
Columbia: Santa Marta, H.H. Smith 1230, 1898-1901, ? Isotype

Piper scutilimbum C.DC., Ann. Conserv. & Jard. Bot. Genève 21: 242. 1920
Columbia: Santa Marta, H.H. Smith 1235, 1898-1901, ? Isotype

Piper villibracteum C.DC., Ann. Conserv. 7 Jard. Bot. Genève 21: 233. 1920
Columbia: Santa Marta, H.H. Smith 384, 1898-1901, ? Isotype

Piptocarpa gracilis Rusby, Descriptions of Three Hundred New Species of South American Plants, pp. 146-147. 1920
Columbia: Santa Marta, H.H. Smith 1982 (1898-1901), ? Isotype

Pithecellobium pittieri Britton & Killip, Ann. New York Acad. Sci. 35: 148. 1936
Columbia: Santa Marta, H.H. Smith 28a, 1898-1901, ? Isotype

Pityrogramma ornithopteris (Kl.) Domin var. sanctae-marthae Domin, Lilloa 2: 34. 1938
Columbia: Santa Marta, H.H. Smith 1061, 1898-1902, ? Isotype

Plantago arborescens Poir., Encyc. 5: 389. 1804
Canary Islands: Tenerife, Valle de Orotava, E. Asplund 279, 13 Mar. 1933, Topotype

Plantago elongata Pursh ssp. pentasperma Bassett, Can. J. Bot. 44: 470-471. 1966
U.S.A.: California, Alameda Co., West end of Depot Road, 1.5 miles northwest of Mt. Eden Railroad Station, Chisaki et al. 1321, 30 Apr. 1959, Isotype

Plantago lanceolata L. f. longigynia Hylander, Publication unknown
Sweden: Karlskrone, Hj. Hylander, 11 June 1948, ? Type Collection Material

Plantago notata Lag. Gen. & Sp. Nov. 7
Spain: Baetica, inter Cuevas et Pulpi, Almeria, C. Pau, 15 May 1921, Topotype

Plantago subulata L. var. granatensis Wk., Publication unknown
Spain: Regno Granatensi, Sierra Nevada Vacarres, P. Font i Quer, Aug. 1923, ? Type Collection Material

Plantago webbii Barn., Monog. Plantag. 50
Canary Islands: Nivaria, Las Canadas, E.R. Sventenius 75, 24 Apr. 1944, Topotype

Platanthra x reznicekii Catling, Brownell & Allen, Luidleyana 14(2): 81. 1999
Canada: Ontario, Simcoe Co.,Vespra Twp. Minesing Swamp, 44°22'37"N 79°51'05"W, Allen, Catling & Brownell s.n., 22 July 1997, Holotype

Plathera xhollandiae Catling & Brownell, Can. J. Bot. 77: 1147. 1999
Canada: Ontario, York Co., North Gwillimbury Twp., SE of Gilford on E side of Holland River, Catling & Brownell s.n., 23 July 1997, Holotype

Platydesma campanulatum Mann., Proc. Boston Soc. Nat. Hist. 10: 317. 1866
Hawaiian Islands: Oahu, Degener & Carrol 20544, 26 Feb. 1950, Topotype

Pleuropogon sabinei R.Br., Chlor. Melv. 31. 1823
Canada: District of Franklin, Melville Island, G. Parker 37A, 26 July 1974, Topotype

Pleurothallis schistopetala Schltr., Repert. Spec. Nov. Regni Veg. Beih. 7: 113. 1920
Columbia: Santa Marta, H.H. Smith 2482, 1898-1901, ? Isotype

Plocama pendula Ait., Hort. Kew. Ed. 1, 1: 392
Canary Islands: Tenerife, in vicin. opp. Güimar, Puerto de Güimar, E. Asplund 448, 20 Mar. 1933, Topotype

Pluchea foetida (L.) DC. var. imbricata Kearney, Bull. Torrey Bot. Cl. 21: 483. 1894
U.S.A.: Florida, Lake Co., Eustis, G.V. Nash 1434, 16-31 July 1894, Type Collection Material

Pluchea longifolia Nash, Bull. Torrey Bot. Cl. 23: 108. 1896
U.S.A.: Florida, Brevard Co., Titusville, G.V. Nash 2293, 30 July-1 Aug. 1895, Isotype

Pluchea purpurascens (Sw.) DC. var. succulenta Fernald, Rhod. 44: 27. 1942
U.S.A.: Massachusetts, Martha's Vineyard, M.L. Fernald, (Pl. Ex. Gray 70), 11 Sept. 1901, probable Paratype

Poa abbreviata R.Br., Chlor. Melv. 29. 1823
Canada: District of Franklin, Melville Island, Mosquin & Martin 6403, 19 July 1965, Topotype

Poa agassizensis Löve & Boivin, Nat. can. 87: 176. 1960
Canada: Manitoba, Brunkild, Boivin et al. 9167, 6 June 1952, Holotype

Poa agassizensis Boivin & Löve
Canada: Mackenzie, south of Fort Smith, Cody & Loan 4135, 2 July 1950, Paratype; Fort Providence, Cody & Matte 8565, 4 July 1955, Paratype; Fort Providence, Cody & Matte 8530, 4 July 1955, Paratype; New Brunswick: steep slope of Zachie Johan Mt., Dore & Gorham 45-201, 19 June 1945, Paratype; Quebec: Bristol, H. Groh s.n., 7 July 1938, Paratype; Ontario: Merivale, W.G. Dore 326, 18 Sept. 1936, Paratype; Ingolf, W.N. Denike 62, 20 June 1940, Paratype; Cushing Island, Ottawa River, 2 miles northwest of Pembroke, W.H. Mnishall 2119, 9 June 1941, Paratype; Stormont County, Ault Park, Sheek Island in St. Lawrence River, Dore & Cody 15086, 17 June 1954, Paratype; Thunder Bay District, 5 miles west of Fort William, D. Lindsay 1223, 13 June 1957, Paratype; Manitoba: Brandon, M.O. Matte s.n., 28 June 1918, Paratype; East Brandon, G. Stevenson 830, 14 June 1953, Paratype; Brandon, G. Stevenson 162, 28 June 1950, Paratype; Brandon, G. Stevenson 163, 16 June 1950, Paratype; Brandon, G. Stevenson 300, 16 June 1950, Paratype; Virden, Boivin & Alex 9288, 13 juin 1952, Paratype; 3 miles west of Camp Shilo, Boivin et al. 9225, 9 June 1952, Paratype; dunes à ouest de Saint-Claude, Boivin & Alex 9258, 12 juin 1952, Paratype; dunes à est de Saint-Claude, Boivin & Alex 9263, 12 juin 1952, Paratype; 1 mile east of Carman, Boivin et al. 9180, 7 June 1952, Paratype; Riding Mountain National Park, J.S. Rowe 149, 11 July 1948, Paratype; Riding Mountain National Park, J.S. Rowe 156, 20 June 1948, Paratype; Riding Mountain National Park, J.S. Rowe 153, 10 Aug. 1948, Paratype; 3 milles au nord-est de Saint-Lazare, Boivin & Alex 9299, 14 juin 1952, Paratype; 2 miles east of Woodside, Löve & Löve 5693, 28 July 1952, Paratype; Delta, Löve & Löve 5848, 2 July 1953, Paratype; District de Provencher, Otterburne, Boivin & Bernard 10284, 11 juillet 1954, Paratype; 20 miles west of Boissevain, W.G. Dore 10990, 23 June 1950, Paratype; 5 miles south of Melita, W.G. Dore 11007, 23 June 1950, Paratype; District of Springfield, 4 milles à l'ouest de Brokenhead, 24 juin 1955, Paratype; North Kildonan, W.N. Denike 63, 2 June 1940, Paratype; Saskatchewan: Beaver Lake, G.F. Ledingham 48-338, 30 June 1948, Paratype; Cairnduff, R.T. Coupland 23, 11 June 1953, Paratype; 1 mile east of Hoosier, L. Jenkins 27, 29 July 1945, Paratype; District of Mackenzie, Hudson Bay Junction, Boivin & Mosquin 10870, Paratype; Antelope, W.G. Dore 11570, 14 July 1950, Paratype; Como Park, north of Indian Head, Dore & Boivin 13080, 4 July 1951, Paratype; Indian Head, Sallans & Ledingham S1002, 23 June 1939, Paratype; Rosthern District, St. Laurent, R.C. Russell S52334, Paratype; Saskatoon District, Saskatoon, J.H. Hudson 711, 15 June 1951, Paratype; Swift Current District, Swift Current, Boivin & Alex 9374, 18 juin 1952, Paratype; Yorkton District, Copeland, Russell & Russell 4812, 18 July 1948, Paratype; Alberta: Ft. McMurray, Cody & Gutteridge 7251A, 9 July 1953, Paratype; Beaverlodge, L. Jenkins 198, 29 June 1947, Paratype; Peace River, H. Groh s.n., 12 Sept. 1934, Paratype; 2 miles east of Lac la Biche, Cody & Gutteridge 6943, Paratype; British Columbia: Tranquille Range, Kamloops, E.W. Tisdale 40-31, July 1937, Paratype
U.S.A.: Colorado, Las Animas County, along Chacusco Creek, eight miles southwest of Tobe, C.M. Rogers 5758, 19 May 1948, Paratype; Greene County, 1½ miles south of Paton, B. Shimek s.n., 27 May 1924, Paratype; Kansas, Lawrence County, Kansas University Campus, W.H. Horr E12, 12 May 1934, Paratype; Nevada, Esmeralda County, Chiatovich Creek, V. Duran 2763, 20 June 1930, Paratype; New Mexico, Sandoval County, Espiritu, Los Bancos Hill, D. Mahaffey 58, 30 May 1937, Paratype; Wisconsin, sand prairie near Indian River Mission, 6 miles northeast of B.R. Falls, D.F. Grether 5133, 11 June 1947, Paratype

Poa alpina L. var. rupicaprina Domin, Fl. Cechoslovenica ex. 364
Czechoslovakia: montes Bielské Tatry, Domin & Krajina, 14 July 1929, Isotype

Poa arctica R.Br., Chlor. Melv. 30. 1823
Canada: District of Franklin, Melville Island, G. Parker 61a, 5 Aug. 1974, Topotype

Poa arctica R.Br. var. microglumis Nannf., Symb. Bot. Uppsala 4: 77-78. 1940
Sweden: Torne Lappmark, above the brook Kappasjokk, J. Ax. Nannfeldt, 31 July 1928, Isotype

Poa eyerdamii Hultén, Fl. Alaska and Yukon 2: 206-208. 1942
U.S.A.: Alaska, Kodiak, Sitkalidak Isl., Port Hobron, W.J. Eyerdam 18, 27 July 1931, Isotype

Poa fagetorum P. Smirnow, Bull. Soc. Nat. Moscow 58: 57. 1953
U.S.S.R.: Tauria merid., montes Karabi--jajla, P. Smirnow (Herb. Gram. Sel. U.R.S.S. Cur. Mosq. Ed. 19), 7 June 1953, Topotype

Poa fernaldiana Nannf., Symb. Bot. Upsal.5: 50. 1935
U.S.A.: New Hampshire, Mt. Washington, Williams & Robinson (Pl. exs. Grayenae No. 123), 24 July 1903, Isotype

Poa howellii Vasey & Scribn. var. chandleri Davy, Univ. Calif. Pub. Bot. 1: 60. 1902
U.S.A.: California, Siskiyou Co., near Marble Mountain, H.P. Chandler 1703, June 1901, Isotype

Poa maroccana Nannf., Sv. Bot. Tidskr. 32: 296. 1938
MOROCCO: Taza, Nannfeldt (cult. at Uppsala, Sweden from seed of Samuelsson 7256), May 1938, 2 June 1937, 6 July 1938, Hortotype

Poa montevansi Kelso, Biol. Leaflet 29: 2. 1945
U.S.A.: Colorado, Mt. Evans, L. & E.H. Kelso 427, 23 Aug. 1934, Isotype

Poa nemoralis L. var. reichenbachiana Asch. & Gr. f. biflora Litwinow, Herb. Fl. U.R.S.S. 2827
U.S.S.R.: Prov. Leningrad, Sostroretsk, D. Litwinow, Isotype

Poa norbergii Hultén, Fl. Alaska and Yukon 2: 218. 1941
U.S.A.: Alaska, Chichagof Island, Hoonah, I.L. Norberg 232, 26 July 1932, Isotype

Poa porsildii Gjaerevoll, Kgl. Nov. Vidensk. Selsk. Forh. 29(6): 72-74. 1956
Canada: District of Mackenzie, Mile 216 Canol Road near the Yukon border. W.J. Cody 19958, 12 July 1971, Topotype

Poa pratensis L. ssp. ratezatensis Nyar., Bull. Grad. Muz. Bot. Cluj 8: 102. 1928
Roumania: Transsilvania, distr. Hunedoara, Mts. Ratezat, E.I. Nyarady (Fl. Rom. ex. 728), 6 Aug. 1928, Isotype

Poa skvortzovii Probat., Hoboctn cnct. Bbiciii. Pact. 10: 72. 1973
U.S.S.R.: Prov. Primorje, in vicin. Urb. Vladivostok, prope pag. Okeanskaja, N. Probatova, Akad. Hayk CCCP 5813, 20 June 1968, Type Collection Material

Poa violacea Bellardi f. submutica Domin, Fl. Cechslovenica ex. 231
Czechoslovakia: Rossia Subcarpatica, Todiaska, M. Deyl, 28 July 1931, Isotype

Podanthum psaridis Heldr., Publication unknown
Greece: Laconia, in reg. alp. M. Taygeti, H. Zahn, 2 July 1899, ? Type Collection Material

Podospermum jacquinianum Koch, Syn. ed. I, 425. 1837
Austria: in graminosis agri Vindobonensis, Woloszczak, (Fl. ex Aust.-Hung. 653), Topotype

Polemonium boreale Adams forma albiflorum Cody, Can. Field-Nat. 117:
Canada: Mackenzie, Horton River, 69°42'N 126°56'W, G.W. Scotter 10101b, 6 July 1995, Holotype; Herschel Island, 69°30'N 139°15'W, C.E. Kennedy 262, 16 July 1985, Paratype

Polemonium boreale Adams f. albiflorum Cody, Can. Field. Nat.
Canada: District of Mackenzie, Horton River, 69°42'N 126°56'W, G.W. Scotter 101016b, 6 July 1995, Holotype

Polemonium eximium Greene, Pittonia 3: 305. 1898
U.S.A.: California, Tuolumne Co., Mount Conness, D.D. Keck 4397, 18 Aug. 1936, Topotype

Polemonium pulcherrimum Hook. f. candidum Boivin, Nat. can. 93: 1062. 1966
Canada: British Columbia, Surprise Lake below Idaho Peak east of Atlin, Calder & Gillett 25193, 9 June 1960, Holotype

Polycline proteiformis Humbert, Composées Madag. (Mem. Soc. Lin. Normand 25) 103, 298. 1923
Madagascar: entre Behara et Tranomaro, M.R. Decary 9894, 8-6- 1932, Topotype

Polygala amara L., Syst. Nat. ed. 10: 1154. 1759
Austria: in monte Geissberg ad Perchtoldsdorf, Pernhoffer (Fl. ex. Austro.-Hung. 511), Topotype

Polygala amarella Crantz, Stirp. Austr. fasc. 5: 438. 1769
Austria: in luco Prater ad Vindobonam, (Fl. ex. Austr.-Hung. 512), Topotype

Polygala austriaca Crantz, Stirp. Austr. fasc. 5: 439. 1769
Austria: prope Neostadium (Wiener Neustadt), J. Kerner, (Fl. ex. Austr.-Hung. 513), Topotype

Polygala carniolica A. Kern., Sched. Fl. Exsicc. Austro-Hung. 3: 64
Austria: Carniolîa, prope Praewald, Stapf, Isotype

Polygala cumulicola Small, Bull. Torrey Bot. Club 51: 381-382. 1924
U.S.A.: Florida, Dade Co., Sand-Dunes opposite Miami, Small & Small 6939, 9 July 1915, Paratype

Polygala flabellata Shuttl., Pl. Wright. 1: 41. 1850
U.S.A.: Florida, Key West, Rugel 37, Feb. 1846, Isotype

Polygala leptostachys Shuttl., Pl. Wright. 1: 41. 1850
U.S.A.: Florida, Aspalaga, Rugel, July 1843, Isotype

Polygala puberula Gray, Pl. Wright. 1: 40. 1850
U.S.A.: New Mexico, G. Thurber, 1851, ? Type Collection Material

Polygala rugelii Shuttelworth ex A. Gray, Pl. Wright 1: 41. 1852
U.S.A.: Florida, Manate, Rugel, June 1845, Isotype

Polygala smithii S.F. Blake, Bull. Torrey Bot. Club 51: 84. 1924
Columbia: Santa Marta H.H. Smith 1309, 1898-1901, ? Isotype

Polygala speciosum Kern. ex Marches., Boll. Sc. Adr. Sc. Nat. 4: 19. 1879 (estratto)
Italy: Tirolia australis, Val vestino, P. Porta, May 1904 (Fl. Ital. ex. 920), Topotype

Polygala subsecunda S.F. Blake, Bull. Torrey Bot. Club 51: 87. 1924
Columbia: Santa Marta, H.H. Smith 575, 1898-1901, ? Isotype

Polygala vulgaris L. var. turfosa Celak sou-var. coerulea Gavelle, Publication unknown
Europe: Bavière, entre Eurasburg et Berg, Freiberg, 7 juin 1961, ? Type Collection Material

Polygonella macrophylla Small, Bull. Torrey Bot. Club 23: 407-408. 1896
U.S.A.: Florida, Chapman Herbarium, Type Collection Material

Polygonella meisneriana Shuttl., Meisner in DC. Prodr. 14: 81. 1856
U.S.A.: Alabama, ad Blackwarrior Creek, dit. Blount Cy., Rugel, Sept. 1843, Isotype

Polygonum amgense V. Mich. & V. Perf., Novitates Syst. Pl. Vasc. 1968: 99. 1968
RU.S.A. Jacutia in vic. p. Bujaga ad fl. Amga, V. Michaleva (Pl. ex. USSR 4971), 20 July 1963, Topotype

Polygonum auriculatum Makino, Bot. Mag. Tokyo 17: 117-118. 1903
Japan: Prov. Tosa, Asakura, T. Makino, 15 Oct. 1892, Type Collection Material

Polygonum aviculare L. var. condensatum Becker f. parvifolium Nyardy, Bull. Mus. Grad. Bot. Cluj 27: 107. 1947
Romania: Distr. Timis-Torontal, Banatus, G. Bujorean (Fl. Rom. Ex. 2827), 15 July 1942, ? Type Collection Material

Polygonum aviculare L. var. condensatum Becker f. viarum Nyar., Kol. Fl. 173 (1941-44); Bul. Gr. Bot. Cluj 27: 106. 1947
Romania: Distr. Timis-Torontal, Timisoara, G. Bujorean (Fl. Rom. Ex. 2826), 2 July 1942, Isotype

Polygonum breviochreatum Makino, Bot. Mag. Tokyo 17: 117. 1903
Japan: Prov. Tosa, Idzuma, T. Makino, 17 Oct. 1892, Type Collection Material

Polygonum buxiforme Sml. f. montanum Brenckle, Phytologia 3: 363. 1950
U.S.A.: Utah, Salt Lake Co., Salt Lake City, Cottam & Brenckle (Brenckle, Avicularia ex. Fasc. 2, No 38), 17 Aug. 1941, Type Collection Material

Polygonum caurianum Robins. ssp. hudsonianum Wolf & McNeill, Rhod. 88: 469-470. 1986
Canada: Québec, Fort George, E. Lepage 12863, 30 août 1950, Holotype

Polygonum conspicuum Nakai f. albiflorum Hiyama, Publication unknown
Japan: Prov. Sagami Hondo, Uraga, Yokosuka, T. Makino, 1916, ? Type Collection Material

Polygonum cuspidatum Sieb. & Zucc. f. coloratum (Makino) Hiyama, Publication unknown
Japan: Prov. Mussai, Hondo, Tokyo, Koishikawa Botanical Garden, T. Makino, 4 June 1908, ? Type Collection Material

Polygonum cuspidatum Sieb. & Zucc. f. hastatum Hiyama, Publication unknown
Japan: Prov. Kii, Hondo, Mt. Koya, Ito-gun, T. Makino, 29 June 1930, ? Type Collection Material

Polygonum filiforme Thunb. f. trichorachid Hiyama, Publication unknown
Japan: Prov. Musasi, Hondo, Shibuya, Tokyo, T. Makino, 11 Oct. 1922, ? Type Collection Material

Polygonum foliosum Lindb. f., Meddel. Soc. p. Faun. et Fl. Fennica 27: 3. 1900
Finland: Nylandia, Borga, H. Lindberg, 1 Oct. 1901, Topotype

Polygonum foliosum H. Lindb. var. nikaii (Makino) Hiyama, Publication unknown
Japan: Prov. Ise, Hondo, T. Makino, 1924, ? Type Collection Material

Polygonum foliosum H. Lindb. var. paludicola (Makino) Hiyama, Publication unknown
Japan: Prov. Musasi, Hondo, Mitsuzawa, Yokohama, T. Makino, 24 Sept. 1911, ? Type Collection Material

Polygonum franktonii Wolf & McNeill, Rhod. 88: 474. 1986
Canada: Nova Scotia, Digby Co., St. Bernard to New Edinburg, J. McNeill 5172, 2 Sept. 1976, Holotype

Polygonum heterosepalum Peck & Ownbey, Madrono 10: 250-251. 1950
U.S.A.: Oregon, Malheur Co., 12 mi. N of Jordan Valley, Ownbey & Ownbey 2744, 13 June 1946, Isotype

Polygonum hydropiper L. var. fastigiatum Makino, Publication unknown
Japan: Prov. Musasi, Hondo, Tokyo (cult.), T. Makino, 18 Sept. 1903, ? Type Collection Material

Polygonum hydropiper L. var. laetevirens Makino, Publication unknown
Japan: Prov. Tango, Hondo, T. Makino, 1931, ? Type Collection Material

Polygonum hydropiper L. var. purpurascens Makino, Publication unknown
Japan: Tokyo Pref., Oizumi-machi, Nerima-ku, T. Makino, 19 Sept. 1932, ? Type Collection Material

Polygonum hydropiperoides Michx. ×P. robustius Fernald, Rhod. 24: 173-174. 1922
Canada: Nova Scotia, Annapolis Co., Lamb's Lake, Fernald & Long (Pl. ex. Gray 450), 29 Aug. 1921, Isotype

Polygonum insulare Maximova, Pl. ex. CCCP 6076. 1982
U.S.S.R.: Jacutia, insulae Ursinae maris Sibirici Orientalis, insula Krestovskjii, M. Maximova, 17 July 1971, Isotype

Polygonum interior Brenckle, Phytologia 2: 403. 1948
U.S.A.: South Dakota, Malette, J.F. Brenckle (fasc 1 No. 2), 3 Sept. 1942; fasc. 2 No. 3), 10 Oct. 1946; (fasc. 1 No. 1 7 June 1942, Type Collection Material

Polygonum interior Brenckle var turneri Brenckle, Phytologia 2: 403-404. 1948
Canada: Alberta, Fort Saskatchewan, G.H. Turner, Sept. 1943 Brenckle fasc. 1, No. 4), Type Collection Material

Polygonum marinense Martens & Raven, Madrono 18: 87. 1965
U.S.A.: California, Marin Co., head of Drake's Estero, Point Reyes Peninsula, P.A. Raven 16568, 22 Aug. 1961, Isotype

Polygonum paronychia C. & S., Linnaea 3: 51. 1828
U.S.A.: California, San Francisco, L.S. Rose 56094, 15 June 1956, TOPTOYPE

Polygonum pensylvanicum L. var. laevigatum Fernald, Rhod. 19: 73. 1917
U.S.A.: Maine, Orono, M.L. Fernald (Pl. ex. Gray 201), 27 Aug. 1908, SYNTYPE

Polygonum persicaria L. var. hirticaule Hiyama, Publication unknown
Japan: Prov. Shinano, Honshu, Karuizawa-machi, T. Makino, 1928, ? Type Collection Material

Polygonum persicaria L. var. pubescens Makino, Publication unknown
Japan: Prov. Mutsu, Honshu, Mt. Osoresan, Shimokita-gun, T. Makino, 1928, ? Type Collection Material

Polygonum polygaloides Meisn. var. montanum Brenckle, Phytologia 3: 364. 1950
U.S.A.: Idaho, Idaho Co., White Bird Summit, R.J. Davis (Brenckle Fasc. 2, 46), 14 June 1941, Isotype

Polygonum prolificum (Small) Robinson var. profusum Brenckle, Brenckle, Phytologia 2: 404. 1948
U.S.A.: South Dakota, Mellette, J.F. Brneckle (fasc. 1, No. 11), 3 Sept. 1942; (fasc. 1, No. 12), 16 Oct. 1946, Type Collection Material

Polygonum ramosissimum Michx. f. atlanticum Robinson, Rhod. 4: 72. 1902
U.S.A.: Massachusetts, Edgartown, M.L. Fernald (Pl. Ex. Gray) 68), 10 Sept. 1901, Isotype

Polygonum sachalinense Fr. Schmidt, In Maxim. Primit. Fl. Amur. 233. 1859
U.S.S.R.: Insula Sachalin, Gizha & Motorina (Fl. ex. U.S.S.R. 3858), 30 Aug. 1952, Topotype

Polygonum shastense Brewer in A. Gray, Proc. Am. Acad. Arts & Sc. 8: 400. 1873
U.S.A.: California, Mt. Shasta, Thorne & Oettinger 38987, 10 Aug. 1969, Topotype

Polygonum subsericeum M. Pop., Herb. Fl. U.S.S.R. 4015. 1957
U.S.S.R.: Lac Baical, Popov & Bardunov, 13 Aug. 1955, Isotype

Polygonum taquetii Lév. f. minutulum Makino, Publication unknown
Japan: Tokyo Pref., Shi-mura, Itabashi-ku, T. Makino, Nov. 1909, ? Type Collection Material

Polygonum thumbergii Sieb. & Zucc. var. oreophilum Makino, Fl. Jap. Ed. Rev. p. 409. 1965
Japan: Honshu, Prov. Musashi, Mt. Takao, T. Makino 16091, 1933, Topotype

Polygonum viscoferum Makino, Bot. Mag. Tokyo 17: 115-116. 1903
Japan: Tokyo Pref., Okusawa, Stagaya-ku, T. Makino, 1900, Type Collection Material

Polygonum viscoferum Makino var. robustum Makino, Publication unknown
Japan: Kyoto Pref., Mt. Hiei, Kyoto City, T. Makino, Sept. 1932, ? Type Collection Material

Polygonum watsonii Small var. alpinum Brenckle, Phytologia 3: 363-364. 1950
U.S.A.: Wyoming, Albany Co., Medicine Bow Mts., Lake Tower, Brenckle & Shinners (Brenckle Fasc. 2: 45), 19 Aug. 1941, Isotype

Polygonum yukusaianum Makino, Bot. Mag. Tokyo 28: 116-117. 1914
Japan: Tokyo Pref., T. Makino, Sept. 1914, ? Type Collection Material

Polypodium appalachianum Haufler & Windham, Am. Fern J. 81(1): 18. 1991
Canada: Quebec, Ste. Anne de la Pocatière, J.A. Calder 1406, 9 Aug. 1947, Paratype

Polypodium knowltoniorum Hodge, Amer. Fern. Jour. 31: 105. t.1. 1941
Dominca: Morne Trois Pitons, W.H. & B.T. Hodge 1431, 23 Feb. 1940 (Pl. Ex. Grayanae 1102), Topotype

Polypodium montense F.A. Lang, Madrono 20: 57. 1971
Canada: British Columbia, McGuire, Cheakamas River, F.A. Lang 207, 24 Oct. 1964, Topotype

Polypodium appalachianum Haufler & Windham
U.S.A.: Massachusetts, Rockport, Smith & Gates 402, 11 Sept. 1928, Paratype

Polystichum andersonii Hopkins, Amer. Fern. J. 3: 116. 1913
Canada: British Columbia, Strathcona Provincial Park, Elk River Valley, Calder & MacKay 31656, 20 July 1961, Topotype

Polystichum dudleyi Maxon, Jour. Wash. Acad. 8: 621. 1918
U.S.A.: California, San Mateo Co., Santa Cruz Peninsula, W.R. Dudley, 5 Mar. 1898, Paratype

Polystichum ×hagenahii Cody, Amer. Fern. Jour. 58: 30. 1968
Canada: Ontario, Bruce Co., Cape Crocker Indian Reserve, Wagner & Hagenah, 1953, Holotype

Polystichum ×kasayamense Kurata, Sci. Rept. Yokosuka City Museum 15: 44-48. 1969
Japan: Honshu, Pref. Yamaguchi, Kasayama, Hagi-city, T. Nakaike, 10 Aug. 1968, Topotype

Polystichum kruckebergii W.H. Wagner, Amer. Fern. Jour. 56: 4. 1966
Canada: British Columbia, Mt. McLean at Lillooet, Calder et al. 15550, 6 Sept. 1954, Isotype

Polystichum lobatum Presl var. umbraticum Rossi f. pilosum Domin Domin & Krajina, Flora Cechoslovenica exsiccata 206
Czechoslovakia: Rossia Subcarpatica, prope Sevlus, Domin et al., 23 May 1931, Isotype

Polystichum ×ongataense Kurata, Hokuriku Journ. Bot. 6: 114. 1957
Japan: Honshu, Tokyo, Higashituchirazawa, Ongata, Hachiouzi- city, S. Serizawa 10964, 18 Aug. 1969, Topotype

Polystichum ×potteri Barr.
Canada: Quebec, Brome Co., Waterloo, Br. Marie-Anselm s.n., 14 Aug., 1937, Paratype

Polystichum ×potteri Barr, Rhod. 88: 298-299. 1986
Canada: Nova Scotia, Inverness Co., near Harvard Lakes, Prince & Atwood 1442, 27 Sept. 1928, Paratype

Polystichum rapense E. Brown, Bishop Museum Bull. 89: 39 t.4A. 1931
Polynesia: Rapa, St. John & Fosberg 15244, 30 June 1934, Topotype

Pontederia cordata L. f. bernardii Lepage, Nat. can. 82: 101. 1955
Canada: Quebec, Nominingue, Lac Violon, J.-P. Bernard 5181, 17 août 1955, Isotype

Populus ×barnesii W.H. Wagner, Mich. Bot. 9: 54. 1970
U.S.A.: Michigan, Washtenaw Co., Waterloo Recreation Area, B.V. Barnes 65W88, 10 Aug. 1969, Isotype

Populus ×bernardii Boivin, Nat. can. 93: 434. 1966
Cultivated: Canada, Saskatchewan, Estevan, Prairie Nurseries, Boivin & Perron 11828, 2 juin 1958, Holotype

Populus ×brayshawii Boivin
Canada: Alberta, Calgary, J. Fletcher s.n., 14 July 1901, Paratype; Lethbridge, Brayshaw & Doan 24726, 13 June 1959, Paratype; Pincher Creek, T.C. Brayshaw 2557, 19 June 1959, Paratype; Cluny, bank of Bow River, T.C. Brayshaw 2596, 2598b, 8 June 1959, Paratype; Crowfoot, bank of Bow River, T.C. Brayshaw 2574, 18 Sept. 1959, Paratype; Frank, T.C. Brayshaw 2563, 2564, 21 June 1959, Paratype; MacLeod, bank of Willow Creek, 49°30'N 113°30'W, T.C. Brayshaw 2530b, 12 June 1959, Paratype; Monarch, bank of Oldman River, T.C. Brayshaw 2512, 2518, 12 June, Paratype; 3 miles east of Cardston, bank of St. Marry River, T.C. Brayshaw 2493, 14 June 1959, Paratype
U.S.A.: New Mexico, Grant County, Mimbres Range, Gila National Forest, J.M. Tucker 3169, 1 July 1956, Paratype

Populus ×brayshawii Boivin, Nat. can. 93: 434. 1966
Canada: Alberta, Lethbridge, Boivin et al. 12194, 23 juin 1958, Holotype

Populus ×dutillyi Lepage, Nat. can. 88: 50. 1961
Canada: Ontario, rivière Kenogami, 6 milles en aval de Mammamatawa, Dutilly & Lepage 38459, 4 août 1960, Isotype

Populus ×jackii Sarg., Trees and Shrubs 2: 212. 1913
Cultivated: Arnold Arboretum from cuttings from Chateaugay, Quebec collected by J.G. Jack, E.J. Palmer, 23 Aug. 1938, Hortotype

Populus ×rollandii Rouleau, Nat. can. 71: 265. 1944
Canada: Quebec, ïle Ste.-Hélène, E. Rouleau 5005, 26 juillet 1942, Isotype

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Populus ×rouleauiana Boivin
Canada: Quebec, Mont-Royal, Montreal, E. Rouleau 2534, 2535, 15 juin 1939, Paratype; Comté de Chambly, Longueuil, E. Rouleau 4132, 4133, 3 Sept. 1940, Paratype

Populus ×rouleauiana Boivin, Nat. can. 93: 435. 1966
Canada: Quebec, Co. Chambly, Longueuil, E. Rouleau, 13 août 1942, Isotype

Porophyllum calcicola Rob. & Greenm., Proc. Amer. Acad. 39: 116. 1903
Mexico: Morelos, near Yantepec, C.G. Pringle 8720, 8 Nov. 1902, Type Collection Material

Potamogeton gramineus L. var. fluctuans Tiselius, Potamogetones suecici ex. 28
Sweden: Nerike, Götlunda, Hasta, G. Tiselius, 7 Aug. 1884 (fr.), 19 June 1886 (fol.), Isotype

Potamogeton ×meinshausenii Juz., Fl. exsiccata U.S.S.R. 3901
U.S.S.R.: Prov. Leningrad, Pudostj, Juzepczuk & Golubkova, 22 & 25 Aug. 1951, Isotype (2 SHEETS)

Potamogeton ogdenii Hellquist & Hilton, Syst. Bot. 8: 88. 1983
U.S.A.: New York, Columbia co., Canaan, C.B. Hellquist 11840, 9 Sept. 1976, Topotype

Potamogeton upsaliensis Tiselius var. jäsevadensis Tiselius, Potamogetones suecici ex. 84
Sweden: Upland, in flumine Fyris ad Jäsevad, G. Tiselius, 23 July 1890, Isotype

Potamogeton zosteriformis Fern., Mem. Am. Acad. Arts & Sci. 17(1): 36. 1932
U.S.A.: Michigan, Gratiot Co., Alma, C.A. Davis, 12 July 1893, Isotype

Potentilla basaltica Trehm & Ertter, Brittonia 36(3): 228. 1984
U.S.A.: Nevada, Humboldt Co., Calico Mts., Tiehm & Lavin 7770, 31 May 1983, Isotype

Potentilla beanii Clokey, Bull. So. Calif. Acad. Sci. 38: 4-5. 1939
U.S.A.: Nevada, Clark Co., Charleston Peak, I.W. Clokey 7974, 22 July 1938, Isotype

Potentilla cascadensis Rydb., Monog. N. Am. Potentilleae 109. 1898
U.S.A.: Washington, Skamania Co., Chiquash Mts., W.N. Suksdorf 2165, 14 Sept. 1896, Isotype

Potentilla cottamii N. Holmgren, Brittonia 39: 340. 1987
U.S.A.: Nevada, Elko Co., Pilot Peak, A. Tiehm 10738, 5 July 1986, Isotype

Potentilla cryptocaulis Clokey, Bull. So. Calif. Acad. Sci. 37: 4-6. 1938
U.S.A.: Nevada, Clark Co., Charleston Peak, I.W. Clokey 7567 18 July 1937, Isotype

Potentilla cryptotaeniae Maxim. var. insularis Kitagawa, Publication unknown
Japan: Nikko City, Tochigi Pref., T. Makino, Aug. 1916. ? Type Collection Material

Potentilla dickinsii Franch. & Sav. var. para-rugulosa Kitagawa, Publication unknown
Japan: Mt. Yomogi, Iwate Pref., T. Makino, 1928, ? Type Collection Material

Potentilla finitima Kohli & Packer
Canada: Manitoba, Carberry, Senn & Gordon 3141, 3142, 22 Aug. 1946, ParatypeS; Forest Reserve south of Carberry, H.H. Marshall 65-10, 25 July 1965, Paratype; Montrose Community Pasture, 19 miles southwest of Saskatoon, A.L. Darwent 65-12, 7 Sept. 1964, Paratype; Battleford, G.W. Selleck 172, 2 Sept. 1954, Paratype; Battleford, W.W. Robbins s.n., 17 July 1911, Paratype

Potentilla finitima Kohli & Packer, Can. J. Bot. 54: 714-716. 1976.
Canada: Manitoba, 15 mi. NW of Melita, Dore & Breitung 12664, 15 Aug. 1950, Holotype

Potentilla floribunda Pursh., Flora Am. Sept. 355. 1814; Elkington New Phyt. 68: 1969
Canada: Ontario, Thunder Bay District, Anglica I. off Squaw Bay, C.E. Garton 6211, 12 July 1959, Topotype

Potentilla fruticosa L. var. leucantha Makino, Publication unknown
Japan: Tokushima Pref., Mt. Tsurugisan, T. Makino, 1909, ? Type Collection Material

Potentilla glandulosa Lindl. var. campanulata C.L. Hitchc., Vasc. Pl. Pacific Northwest 1: B61. 1969
U.S.A.: Oregon, Grant Co., S fork of John Day River, A. Cronquist 6984, 18 May 1953, Isotype

Potentilla lozani Rose & Painter, Contr. U.S. Nat. Herb. 10: 95. 1906.
Mexico; Hidalgo, Cuymatoya Station, C.G. Pringle 10277, 9 Aug. 1906, Topotype

Potentilla norvegica L. var. diffusa Nestl. f. spontanea D. Litw. Herb. Fl. Ross. 2159
U.S.S.R.: Prov. et distr. Mosqua, inter Bratowsczina et Spasskoje, D. Syreishchikov, 11 June 1907, Isotype

Potentilla pennsylvanica L. var. brevipila Sojak, Preslia 59: 301. 1987
Canada: Yukon Territory, Sunnydale about 3 miles S of West Dawson, Calder & Billard 3395, 30 June 1949, Isotype

Potentilla pensylvanica L. var. arida Boivin
Canada: Manitoba, La Riviere, H. Groh s.n., 19 June 1939, Paratype; Aweme, H. Groh s.n., 9 June 1932, Paratype; Neepawa District, Carberry, Senn & Gordon 3140, 22 Aug. 1946, Paratype; Saskatchewan, Assiniboia County, southeast of Hitchcock, Boivin & Dore 7959, 16 July 1951, Paratype; Assiniboia District, Roche Percée, Boivin & Dore 8027, 17 July 1951, Paratype; District of North Battleford, Flat Valley, rivière Beaver, B. Boivin 6922, 19 août 1949, Paratype; Hoosier, J. Jenkins 679, Sept. 1947, Paratype; Maple Creek, Coupeland & Budd 25, 26, 20-21 July 1944, Paratype; Cypress Hills, Battle Creek Ranger Station, A.J. Breitung 5008, 25 July 1947, Paratype; Cypress Hills Park, Bold Butte, A.C. Budd 29, 17 Aug. 1944, Paratype; Cypress Hills Park, N.E. of Chalet, A.C. Budd 30, 11 July 1944, Paratype; Cypress Hills Park, Maple Creek District, Senn et al. 2359, 19 July 1946, Paratype; Maple Creek District, Senn et al. 2444, 20 July 1946, Paratype; south of McKague, A.J. Breitung 291, 16 July 1939, Paratype; Dana, Russell & Russell s.n., 3 July 1936, Paratype; St. Louis, Senn et al. 2810, 11 Aug. 1946, Paratype; Dana, Senn et al. 2752, 10 Aug. 1946, Paratype; Weyburn, Boivin & Dore 7848, 14 July 1951, Paratype; south of Macoun, Boivin & Dore 7954, 16 July 1951, Paratype; Big Muddy Valley, W. Shevkenek 178, 26 June 1940, Paratype; 7 milles au sud-est du lac Bulkin (Bengough), Boivin & Gillett 8743, 10 août 1951, Paratype; Bengough, Boivin & Gillett 8687, 8 août 1951, Paratype; Punnichy, R.S. Russell S2922, 12 July 1949, Paratype; Copeland, Russell & Russell S4814, 18 July 1948, Paratype; Theodore, W. Shevkenek s.n., 11 July 1939, Paratype; Yorkton, C. Shaw 51a, 5 July 1946, Paratype; Radisson, Boivin & Breitung 6753, 2 Aug. 1949, Paratype; Swift Current, A.C. Budd 28, 62, 10 Aug. 1944, 2 July 1938, Paratype; Lorryford, A.C. Budd 27, 28 July 1944, Paratype; Chaplin, A.C. Budd 34, 35, 37, 43, 150, June 1944, ParatypeS; ENE of Courval, A.C. Budd 39, 29 June 1944, Paratype; N. of Valjean, A.C. Budd 36, 44, June 1944, ParatypeS; Alberta, Lethbridge, C. Frankton 224, 26 June 1947, Paratype; Pincher Creek, E.W. Tisdale 38, 8 July 1944, Paratype; Cypress Hills, A.C. Budd 32, 23 Aug. 1944, Paratype; Medicine Hat, Tisdale & Coupeland 161, 5 July 1944, Paratype; Fort Saskatchewan, G.H. Turner 25, 10 July 1934, Paratype; near Pincher, E.H. Moss 293, 2 Aug. 1939, Paratype; Macleod, E.H. Moss 715, 15 June 1940, Paratype; Castle River, E.H. Moss 338, 7 Aug. 1939, Paratype; Craigmyle, A.H. Brinkman 5169, 5215, June & July 1942, ParatypeS; British Columbia, Fort St. John, E.H. Moss 8167, 23 June 1948, Paratype
U.S.A.: North Dakota, east of Bowbells, Rivière-des-Lacs, Boivin & Dore 8064, 19 July 1951, Paratype; South Dakota, Custer County, Custer State Park, O. Tollefson 2, 10 June 1936, Paratype; New Mexico, Santa Fe Canyon, A.A. & E.G. Heller 3795, 2 July 1897, Paratype

Potentilla pensylvanica L. var. arida Boivin, Phytologia 4: 91. 1952
Canada: Saskatchewan, 3 milles à l'ouest de Gull Lake, Boivin & Gillett 8910, 15 août 1951, Holotype

Potentilla rolandii Boivin var. lanata Boivin, Can. Field. Nat. 65(1): 21. 1951
Canada; Nova Scotia, Sable Island, H.T. Gussow s.n., 1911, Holotype

Potentilla rubipes Rydb., Bull. Torrey Bot. Club 33: 143. 1906; Mem. Dep. Bot. Columbia Univ. 2: 101. 1898
U.S.A.: Colorado, El Paso Co., Pike's Peak, F.W. Hunnewell 3144, 25 Aug. 1914, Topotype

Potentilla tanaitica W. Zinger, Bull. Soc. Nat. Mosc. 3: 69. 1882
U.S.S.R.: Prov. Orel, distr. Jeletz, Galiczja Gora, V. Khitrii (Herb. Fl. Ross. 2170), 17 July 1904, Topotype

Potentilla tiroliensis Zimmeter, Sched. Fl. Exsicc. ii 21. 1882
Austria: Tirolia centralis, A. Kerner (Fl. Essicc. Austro- Hungarica 830), Isotype

Potentilla togasii Ohwi, Bull. Nat. Sci. Mus. Tokyo, m.s. 4 (No. 45): 401-402. 1959
Japan: Honshu, Yuzawa in Echigo, M. Togasi (TNS 1741), 17 June 1958, Isotype

Potentilla vahliana Lehm. Monog. Potentilla 1820: 172-3
Greenland: Godhavn, C.O. Erlanson 3004, 18 June 1928, Topotype

Potentilla valderia L. Sp. Pl. ed. 2. 714. 1762
Italy: Bains de Valdiere, Em. Burnat, 14 août 1876 (Soc. dauphinoise 1189), Topotype

Potentilla verna L. var. vulgaris f. elongata F. Schultz, Publication unknown
Germany: Wissembourg, F. Schultz, (Herb. Norm. Cent. 1, 40 ter), 12 May 1855, ? Type Collection Material

Potentilla vindobonesis Zimmeter in A. Kerner, Schedae Fl. Ex. 3: 23-24. 1884
AustriaInferior: Richter (Fl. ex. Austro-Hungarica 831), Isotype

Potentilla volgarica Juz., Spisok. Rast. Herb. Fl. U.S.S.R. 11: 117. 1949
U.S.S.R.: Prov. Saratov, Chvalynsk, K. Gross (Fl. U.S.S.R. Ex. 3400), 1 June 1926, Isotype

Pouteria ucuqui Pires & Schultes, Bot. Mus. Leafl. 14: 87. 1950
Brazil: Upper Rio Negro, Igrapé Uabá, opposite mouth of Rio Xié, Amazonas, Schultes & Lopez 9553 (Pl. Ex. Gray 1461), 3- 6 Jan. 1942, Isotype

Pouzolzia scaberrima E.P. Killip, J. Wash. Acad. Sci. 24: 43. 1934
Columbia: Santa Marta, H.H. Smith 1436, 1898-1901, Isotype

Prasophyllum anomalum Rupp, Victorian Naturalist 65: 142-143. 1948
Australia: Blue Mountains, Woodford, I. Bowden 9337, March 1949, Topotype

Prenanthes racemosa Michx. f. rollandii Vict. & Rousseau, Contr. Inst. Bot. Univ. Montreal 36: 52. 1940
Canada: Quebec, Longueuil, F. Rolland-Germain, 16 septembre 1938, Isotype

Prestonia mucronata Rusby, Descriptions of Three Hundred New Species of South American Plants, pp. 90-91. 1920
Columbia: Santa Marta, H.H. Smith 1656 (1898-1901), Isotype

Primula borealis Duby f. albiflora Cody, Can. Field-Nat. 79: 105. 1965
Canada: District of Mackenzie, Anderson River Delta, 69º42'N 129ºW, T.W. Barry 290, 27 June 1962, Holotype

Primula capillaris Holmgren & Holmgren, Brittonia 26: 313. 1974
U.S.A.: Nevada, Elko Co., Ruby Mts., Thomas Creek Canyon near head of Lamoille Canyon, Holmgren & Reveal 2154, 15 July 1965, Isotype

Primula elatior Mill, var. carpatica Griseb. & Schenk f. poloninensis Domin., Veda Prir 11: 241. 1930
Czechoslovakia: Rossia Subcarpatica, montes Svidovec, M. & F. Deyl, (Fl. Cech. ex. 285), 26 May 1930, Isotype

Primula elatior Mill. var. corontica Domin. Veda Prir. 11: 239. 1930
Czechoslovakia: Bohemia, montes Krkonose, Krajina & Sillinger, (Fl. Cech. ex. 284), 18 May 1929, Isotype

Primula farinosa L. var. macropoda Fern., Rhod. 9: 16. 1907
Canada: Quebec, Bic, J. Rousseau 24911, 20 juillet 1926, Topotype

Primula finmarchica Jacq., Misc. austr. 1: 161. 1778
NORWAY: Finmark, Talvik, O. Hedberg, 1 Aug. 1946, Topotype

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Primula gaubeana Bornm., Neue Art. Sekt. Floribundae Fl. Pers. (Mitt. Thüring. Bot. Ver. n.f. 47: 132. 1941
Iran: Luristan, Bisheh, 50 km a Khorramabad orientem versus, K.H. & F. Rechinger 5651, 14-16 July 1948, Topotype

Primula laurentiana Fern., Rhod. 30: 68. 1928
Canada: Quebec, Bic, Marie-Victorin et al. 45694, 6 août 1933, Topotype

Primula maccalliana Wiegand, Bull. Torrey Bot. Club 27: 389. 1900
Canada: Alberta, Banff, W.C. McCalla 6508, 19 May 1941, Topotype

Primula nevadensis N.H. Holmgren, Madrono 19: 27. 1967
U.S.A.: Nevada, White Pine Co., south slopes of Mt. Washington, Holmgren et al. 2216, 20 July 1965, Isotype

Primula portae Huter, Sched. Fl. Austro-Hung. 4: 53. 1886
Italy: Tirolia australis, Trentino, montis Magiassone, P. Porta, June 1906 (Fl. Ital. Ex. 619), Topotype

Primula scotica Hook., Fl. Lond. t. 133
Scotland: West Sutherland, Strathy, J. Anthony 1838, 28 May 1958, Topotype

Primula tschuktschorum Kjellm. ssp. cairnesiana Porsild
Canada: Mackenzie, Richardson Mountains, Yukon-Mackenzie border, J.A. Calder 34099, 9 July 1962, Paratype

Primula techuktschorum Kjellm. ssp. cairnesiana Porsild, Can. Field-Nat. 79: 89-90. 1965
Canada: District of Mackenzie, Richardson Mts., Yukon-Mackenzie border, 67º33'N 136º12'W, J.A. Calder 34099, 9 July 1962, Paratype

Prionoscadium megacarpum Coult. & Rose, Contrib. U.S. Nat. Herb. 3(3): 308. 1895
Mexico: Oaxaca, Sierra de San Felipe, C.G. Pringle 4688, 1 June 1894, 10 Oct. 1894, Isotype

Priva africana Moldenke, Fedde Repert. 41: 36. 1936
South Africa: Transvaal, Potgietersrust, G.P.F. van Dam, Dec. 1924, Topotype

Prostanthera discolor R.T. Baker, Proc. Linn. Soc. N.S. Wales 21: 378. 1896
Australia: New South Wales, Honeysuckle Creek, Murrumbo to Kerrabee, L.A.S. Johnson, 19 Sept. 1951, Topotype

Prostanthera linearis R.Br., Prodr. 509. 1830
Australia: Grose River, R. Brown, 1802-5, ? Isotype

Prostanthera marifolia R.Br., Prodr. 509. 1830
Australia: N shore of Sydney, R. Brown, 1802-5, ? Isotype

Prostanthera ovalifolia R.Br., Prodr. 509. 1830
Australia: Queensland, Shoalwater Bay, R. Brown, 1802-5, ? Isotype

Prostanthera rotundifolia R.Br., Prodr. 509. 1830
Australia: Victoria, Mueller, ? Isotype

Protium mucronatum Rusby, Descriptions of Three Hundred New Species of South American Plants, pp. 34-35. 1920
Columbia: Santa Marta, H.H. Smith 2743 (1898-1901), ? Isotype

Protium neglectum Swart var. tenuifolium Swart, Recueil. Trav. Bot. Néerl. 39: 204. 1942
Columbia: Santa Marta, H.H. Smith 1741, 1898-1901, ? Isotype

Prunella vulgaris L. var. rouleauiana Vict., Nat. Can. 71: 207. 1944
Canada: Quebec, Comté Montmagny, 2 milles E du village Berthier, G. Lemieux s.n., 13 July 1961, Topotype

Prunus ×furuseana Ohwi, J. Jap. Bot. 26(8): 229-230. 1951
Cultivated: Japan, Honshu, Mt. Minobusan in Kai, M. Furuse (TNS 1701), 10 May 1958, Type Tree

Prunus kanzakura Makino, Bot. Mag. Tokyo 26: 176. 1912
Japan: Tokyo Pref., Taito-ku, T. Makino, 13 Oct. 1908, ? Type - Publication not Available

Prunus ×nigrella Cumming, Baileya 11: 5-7. 1963
Cultivated: Dominion Experimental Farm, Morden, Manitoba, W.A. Cumming, 22 May 1961, 3 Oct. 1960, Holotype

Prunus pseudo-cerasus Lindl. var. humilis Makino, Bot. Mag. Tokyo 6: 52. 1892
Japan: Ogawa, Sakawa-cho, T. Makino, 12 May 1935, Topotype

Prunus spinosa L. var. ucrainica Blonski, Publication unknown
Poland: Ukraine, Wasilkowce, distr. Berdyczow, (Flor. pol. exsicc. 929), ? Type Collection Material

Prunus pumila L., Mant. Pl., 1767, Taxon 48: 486. 1999
Canada: Ontario, Prince Edward Co., Hallowell Twp., south of centre of Sandbanks, 43°55'20"N 77°18'00"W, P.M. Catling 14038, 15 July 1993, Lectotype

Psammisia ecuadorensis Hoer., Bot. Jahr. 42: 308. 1909
ECUADOR: Psov. Pichincha, Carretera Antiqua to Santo Domingo de los Colorados, Luteyn & Lebron-Luteyn 5621, 29-30 Mar. 1978, Topotype

Pseudeugenia singaporensis King, Journ. As. Soc. Beng. 70: 133. 1902
Malay Peninsula: Singapore, Mandai Road, Kiah 37141, 25 July 1940, Topotype

Pseudomorus sandwicensis Degener, Flora Hawaiiensis, Fam. 96. 1938
Hawaiian Islands: Kauai, Halemanu Ridge, O. & I. Degener 23931, 15 Sept. 1955, Topotype

Psidium socorrense Johnston, Proc. Calif. Acad. Sc. Ser. IV. 20: 81. 1931
Mexico: Revillagigedo Islands, Socorro Island, J.T. Howell 8398, 26 Mar. 1932, Topotype

Psychotria collina Labill., Sert. Austro-Caled. 47. t. 47
New Caledonia: Nournea, M. Balansa 2990, 1868-1870, ? Topotype

Psychotria degeneri Fosberg, Sargentia 1: 134-135. 1942
Fiji: Viti Levu, Tuvavatu, between Rewasa and Nokonoko, O. Degener 15374, 30 May 1941, Isotype

Psychotria fendleri Standley, Contr. U.S. Nat. Herb. 18: 129-130. 1916
Columbia: Santa Marta, H.H. Smith 1832, 1898-1901, Paratype

Psychotria griseifolia S. Moore, Journ. Linn. Soc. Bot. 39: 153. 1909
Fiji: Viti Levu, near Nandarivatu, O. Degener 14336, 13 Feb. 1941, Topotype

Psychotria indulgens Rusby, Descriptions of Three Hundred New Species of South American Plants, pp. 139-140. 1920
Columbia: Santa Marta, H.H. Smith 1828 (1898-1901), ? Isotype

Psychotria insularum A. Gray var. montanum E. Christophersen, Publication unknown
SAMOA: Savaii, above Matavanu, Christophersen & Hume 2047, 14 July 1931, ? Type Collection Material

Psychotria maricaensis Urb., Syn. Antill. 1: 447. 1899
Puerto Rico: Bosque Insular de Maricao, above Criadero de Peces, Webster et al. 8940, 11 July 1959, Topotype

Psychotria platycocca A. Gray, Proc. Am. Acad. 4: 47. 1860
Fiji: near Nandarivatu, Viti Levu, O. Degener 14563, 24 Feb. 1941, Topotype

Pteralyxia kauaiensis Caum, Occ. Papers Bishop Mus. Honolulu 10(8): 8-9. 1933
Hawaiian Islands: Kauai, ridge behind Papaa, Moloaa Forest Reserve, Degener & Greenwell 21715, 16 Jan. 1952, Topotype

Pteridium aquilinum (L.) Kuhn var. champlainense Boivin, Amer. Fern. J. 42(4): 131-132. 1952
Canada: Quebec, Charlevoix, Les Eboulements, Saint-Joseph, B. Boivin 1066, 25 juin, 1937, Holotype

Pteris ryukyensis Tagawa, Acta Phytotax. Geobot. 4: 204. 1935
Japan: Ryukyu, S. Serizawa 11765, 12 Apr. 1970, Topotype

Pterocarpus floribundus Pittier, Contr. U.S. Nat. Herb. 20: 123. 1918
Columbia: Santa Marta, H.H. Smith 2030, 1898-1901, ? Isotype

Pterocarpus heterophyllus Pittier, Contr. U.S. Nat. Herb. 20: 123. 1918
Columbia: Santa Marta, H.H. Smith 16, 1898-1901, ? Isotype

Pterocephalus lasiospermus Link. in Buch, Beschr. Canar. Ins. 150
Canary Islands: Nivaria, Las Canadas, Azulejos, E.R. Sventenius 82, 18 July 1948, Topotype

Pterocymbium oceanicum A.C. Sm., J. Arn. Arb. 27: 320-321. 1946
Fiji: Viti Levu, Lautoka, W. Greenwood 1082, 18 Aug. 1945, Isotype

Pterotropia gymocarpa Hdb., Fl. Haw. Is. 151. 1888
Hawaiian Islands: Oahu, C. Wong, 16 Apr. 1941, Topotype

Ptilotus sandwicensis Gray, Proc. Am. Acad. 7: 200. 1868
Hawaiian Islands: Kau District, S. Carlquist 2065, 26 July 1966, Topotype

Ptychotis thorei Grenier & Godron, Flore de France 1: 735. 1848
France: Landes, E.J. Neyraut, July 1898 (Herb. Norm. Dörfler 4335), Topotype

Publicaria guestii Rech. & Rawi, Bull. Coll. Arts & Sci. Baghdad 2: 6. 1957
IRAQ: 40 km SE of Al Salman, K.H. Rechinger 186, 23 Apr. 1957, ? Type - Publication not Available

Puccinellia bruggemannii Th. Sorensen, Nat. Mus. Can. Bull. 135: 78. 1955
Canada: Franklin Dist., Prince Patrick Island, Mould Bay, P.F. Bruggemann 470, 8 Aug. 1952, Holotype

Puccinellia colpodioides Tzvel., Arctic Fl. SSSR 2: 194. 1964
U.S.S.R.: Prov. Magadan, Wrangel Island, V. Petrovsky (Fl. ex. SSSR 6303), 27 July 1970, Topotype

Puccinellia distans (L.) Griseb. ×suecica Holmb. f. expansa Holmb, Publication unknown
Sweden: Scania, O.R. Holmberg, 15 Aug. 1904, ? Type Collection Material

Puccinellia ×P. mixta Holmb., Bot. Not. 1920: 106-107. 1920
Sweden: Oelandia, Färjestaden, O.R. Holmberg, 1 July 1917, Type Collection Material

Puccinellia paupercula (Holm) Fernald & Weatherby var. longiglumis Fernald & Weatherby, Rhod. 18: 20. 1916
Canada: Prince Edward Island, Bunbury, Erskine & Dore 1492, 2 July 1952, Topotype

Puccinellia rosenkrantzii Th. Sor., Med om Grfnland 136(3): 33. 1953
Greenland: Nugssuaq Peninsula, Qapiortoq kitdleq, 70º27'N 53º33'W, K. Jakobsen 2443, 12 Aug. 1948, Isotype

Puccinellia suksdorfii St. John, Northwest Science 2: 80. 1928
U.S.A.: Washington, Rockland, W.N. Suksdorf 5089, 2 June 1905, Isotype

Pulmonaria kerneri Wettstein, Verhandlungen der k.k. zool. botan. Gesellschaft, Wien, 38: 559-560. 1888
Austria: Stiria superior, inter "Gross-Reifling" et "Palfau", Dörfler & Ronniger, May, Aug. 1895, (Dörfler Herb. Norm. 3968), Topotype

Pulsatilla grandis Wenderoth, Schriften der Ges. zur Bedförd. d. Naturwissenschaften zu Marburg 2: 257. 1831
Austria: agri Vindobonensis, Woloczczak (Fl. ex. Aust.-Hung. 611), Topotype

Pulsatilla ovczinnikovii Maximova, Flora ex. U.S.S.R. 5067
U.S.S.R.: Siberia orientalis, reg. Chentej-Czikojskoje, A. & M. Maximovae, 7 June 1967, Isotype

Pycnanthemum floridanum Grant & Epling, Univ. Calif. Publ. Bot. 20: 195-240. 1943
U.S.A.: Florida, Orange Co., Sanford, G.V. Nash 2259, 24 July 1895, Isotype

Pyrethrum glabrum Laq., Gen. et Sp. Nov. 30. 1816
Spain: Baetica, Jerz de la Frontera, Gros, 8 May 1925, Topotype

Pyrola californica Krisa, Bot. Jahrb. (Stuttgart) 85: 615. 1966
U.S.A.: California, Washoe Co., 2 mi. N of Galena Creek, W.A. Archer 6503, 7 Aug. 1938, Holotype

Pyrola minor L. var. parviflora Boivin, Nat. can. 87(2): 45. 1960
Canada: Quebec, Fort Chimo area, J.A. Calder 2476, 9 Aug. 1948, Holotype

Pyrus achras Bor. f. ovalis Gillot, Publication unknown
France: Saone-et-Loire, Saint-Emiland, Ozanon & Gillot, 22 avril, 25 août 1882, ? Type Collection Material

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