Dichelachne Endl.

Lemma with an awn attached near the top at least twice as long as the lemma Dichelachne
Awn 2.5 cm or more long, 4–6 times as long as the lemma. Panicle very dense, spike-like, up to 30 cm long; the awns concealing the spikelets. Tufted herb up to 1.5 m high. Widespread. Open forest or cleared areas. Sandy soils. Fl. spring. Long-hair Plume Grass Dichelachne crinita
Awns less than 2.5 cm long, 2–5 times as long as the lemma