Echinochloa muricata (P. Beauv.) Fernald
Rough Barnyard Grass
Natural range: Canada, Throughout the U.S. and beyond
Habitat: Wet disturbed places
Florida status: Native, common
Recognition: Sheaths glabrous. Inflorescences with awns or awnless (or nearly so). Awns variable in length and abundance, when present usually > 6 mm. Spikelet hairs with pustule bases. Tip of lemma acuminate, coriaceous, without a ring of trichomes.