Astragalus kentrophyta var. elatus

Astragalus kentrophyta var. elatus S. Wats.  

Family: Fabaceae

tall spiny milkvetch

[Astragalus impensis (Rydb.) Woot. & Standl., moreAstragalus impensus (E. Sheld.) Wooton & Standl., Astragalus kentrophyta subsp. elatus (S. Wats.) W.A. Weber]