Cynosurus L.
Fertile and sterile spikelets together in the same inflorescence; sterile spikelets with numerous rigidly awned lemmas Cynosurus
Lemmas 3–5 mm long; awns inconspicuous. Fertile spikelets with 3–5 florets, 3–6 mm long. Panicles up to 14 cm long. Leaf blades up to 15 cm log, 1–4 mm wide; ligule blunt 0.5–1.5 mm long. Plant up to 70 cm high. Waste and disturbed areas. Introd. from Europe. Fl. spring Cynosurus cristatus
Lemmas 5–7 mm long, awns conspicuous. Fertile spikelets with 1–5 florets, 3–6 mm long. Panicles up to 14 cm long. Leaf blades up to 20 cm long, 2–10 mm wide; ligule blunt to 10 mm long. Plant up to 1 m high. Waste and disturbed areas. Introd. from Europe. Fl. spring. Rough Dog’s Tail Cynosurus echinatus