Echinochloa muricata (Palisot de Beauvois) Fernald var. microstachya Wiegand. Rough Barnyard-grass. Phen: Jul-Oct. Hab: Alluvial swamps, river shores and bars, depression ponds, interdune swales, low fields, beaver impoundments, manmade impoundments, other moist to wet disturbed habitats. Dist: NL west to BC, south to FL, TX, CA, Mexico, Central America, and South America.

Origin/Endemic status: Native

Synonymy: = Ar, C, ETx1, FNA25, K1, K3, K4, Mi, Mo1, NcTx, NE, NY, Tn, Va, WH3; = Echinochloa microstachya (Wiegand) Rydb. – G; < Echinochloa crusgalli (L.) P.Beauv. – GW1, RAB, SFla, WV; < Echinochloa crus-galli ssp. crus-galli – S; < Echinochloa muricata (P.Beauv.) Fernald – Mex, Pa; > Echinochloa muricata (P.Beauv.) Fernald var. microstachya Wiegand – Il; > Echinochloa muricata (P.Beauv.) Fernald var. multiflora (Wiegand) Fernald & Griscom – F; > Echinochloa muricata (P.Beauv.) Fernald var. wiegandii Fassett – F, Il; > Echinochloa pungens (Poir.) Rydb. var. microstachya (Wiegand) Fernald & Griscom – F

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACW (taxonomic split from wetland indicator species)
• Eastern Mountains and Piedmont: FACW (taxonomic split from wetland indicator species)
• Great Plains: FACW (taxonomic split from wetland indicator species)
• Midwest: OBL (taxonomic split from wetland indicator species)
• Northcentral & Northeast: OBL (taxonomic split from wetland indicator species)

Heliophily: 7