Echinochloa P.Beauv.

Glumes stiff-hispid; spikelets ± loosely arranged on one side of the rhachis Echinochloa
Spikelets awnless
Fruit 2–2.5 mm long, 1.8–2.25 mm wide. Panicle very compact, densely crowded
Spikelets ± strongly purplish to blackish brown (rarely pallid when bleached), shortly acute, 3–4 mm long, 2–2.5 mm wide. Fruit brownish. Culms up to 1 m high. Widespread. Cultivated. Roadsides. Introd. from E. Asia. Fl. summer. Japanese Millet or Ankee Millet Echinochloa esculenta
Spikelets always pallid, shortly acute when young, usually very obtuse at maturity, 3–5 mm long, c. 2.3 mm wide. Fruit whitish. Culms up to 1 m high. Coast. Cultivated. Roadsides. Introd. from India. Fl. summer. Siberian Millet Echinochloa frumentacea