Astragalus tricarinatus A. Gray

Triple-ribbed milkvetch
Fabaceae (Pea)


Astragalus tricarinatus is a small, somewhat rounded, perennial plant with finely strigose vegetative parts, growing around a foot tall. It is a rare species whose center of population is the eastern San Bernardino areas of Whitewater Canyon and the Morongo Valley. It typically inhabits canyon walls and the rocky slopes along the edges of washes from 1400' to about 4000', blooming from February to May. Its common name is derived from the ascending, more or less linear, three-sided papery fruits, each of which contain two chambers. The leaves contain 17-27 well-separated leaflets, each of which is narrowly obovate and silvery-strigose on the upper surface. The spreading-to-ascending inflorescence contains 5-15 well-separated cream-colored flowers.

Click here for Latin name derivations: 1) Astragalus 2) tricarinatus.
Pronunciation: as-TRAG-a-lus try-kare-in-AY-tus.
Click here for Botanical Term Meanings.


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