Carex austrina Mackenzie. Section: [26d] Section 4.0 Phaestoglochin. Phen: May. Hab: Dry calcareous prairies, meadows, and forests, also roadsides, apparently introduced eastwards with hay and/or seed mixes used for erosion control. Dist: Native from IA and NE south to LA and TX; more eastern occurrences are at least in part introduced. First reported for areas east of the Mississippi by Bryson et al. (1996). Reported for DE (Longbottom, Naczi, & Knapp 2016).
Origin/Endemic status: Native
Synonymy: = Ar, ETx1, F, FNA23, Il, K1, K3, K4, Mo1, NcTx, Tn, Mackenzie (1931-1935); = Carex muhlenbergii var. australis Olney – C, G, GrPl; = Carex muhlenbergii var. austrina Small; = n/a – RAB; < Carex muhlenbergii – S, Tx