Aristida purpurea Nuttall var. longiseta (Steudel) Vasey. Red Three-awn. Phen: Aug-Oct. Hab: Rocky and sandy areas, eastwards adventive in disturbed areas. Dist: MB west to BC, south to TX, CA, and Mexico; adventive eastwards. Also reported from NC, but the collection is from a Soil Conservation Service test nursery, and there is no evidence of naturalization.
Origin/Endemic status: Native
Syn: = C, ETx1, FNA25, K1, K3, K4, NcTx, Allred (1986); = Aristida longiseta – G, HC, Tx; > Aristida longiseta var. robusta – F