Chasmanthium laxum (Linnaeus) Yates. Slender Spikegrass. Phen: May-Oct. Hab: Savanna-pocosin ecotones, sandhill-pocosin ecotones, moist hardwood swamps, other moist habitats. Dist: S. NY, KY, and OK south to s. FL and e. TX.

Origin/Endemic status: Endemic

Taxonomy Comments: See C. sessiliflorum for comments on the suggestion that these two taxa are only varietally or subspecifically distinct.

Synonymy: = Ar, C, ETx1, FNA25, GW1, K1, K3, K4, NY, Pa, Tn, Tx, Va, W, Yates (1966a), Yates (1966c); = Chasmanthium laxum (L.) Yates ssp. laxum – Mo1; = Chasmanthium laxum (L.) Yates var. laxum – NcTx, WH3, Wipff & Jones (1994); = Uniola laxa (L.) Britton, Sterns, & Poggenb. – F, G, HC, RAB, S

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