Setaria parviflora (Poiret) Kerguélen. Knotroot Bristlegrass, Perennial Foxtail-grass. Phen: May-Oct (-Apr). Hab: Marshes, ditches, moist disturbed areas, pine rocklands, and dry disturbed areas over limestone. Dist: MA to IA south to s. FL and s. TX, south through Mexico to Central America and South America; CA and NV; West Indies.

Origin/Endemic status: Native

Taxonomy Comments: Gandhi & Barkworth (2003) provided a detailed discussion of the reasons for the nomenclatural change from the once more familiar S. geniculata.

Synonymy: = Ar, ETx1, FlGr, FNA25, Il, K1, K3, K4, Meso6, Mex, Mo1, NcTx, NE, NY, Pa, Tn, Va, WH3, Webster (1993b); = Chaetochloa geniculata (P.Beauv.) Millsp. & Chase – S; = Setaria geniculata P.Beauv. – Bah, C, F, G, HC, RAB, SFla, Tat, Tx, W, WV; > Chaetochloa gracilis (Kunth) Scribn. & – S13; > Chaetochloa imberbis (Poir.) Scribn. – S13; > Chaetochloa occidentalis Nash – S13; > Chaetochloa purpurascens (Kunth) Lanson-Scribner & Merrill – S13; > Chaetochloa versicolor E.P.Bicknell – S13

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACW
• Eastern Mountains and Piedmont: FAC
• Great Plains: FAC
• Midwest: FAC
• Northcentral & Northeast: FAC

Heliophily: 8