Medicago rigidula and M. truncatula (fabaceae): New to the California flora.
Riefner, R.E. and Small, E. (2009). "Medicago rigidula and M. truncatula (fabaceae): New to the California flora.", Journal of the Botanical Research Institute of Texas (BRIT), 3(1), pp. 323-329.
Medicago rigidula and M. truncatula are reported for the first time for California. These species have likely become established from rangeland, forage and cover crops grown over the past century. They can be confused with the relatively common M. polymorpha, and are probably more widespread than current records indicate.
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