Diplachne fusca (L.) P.Beauv.

Lemma 3.5 mm or more long. Upper glume more than 3 mm long. Spikelets usually dark coloured, usually with more than 6 florets, in a dense branched panicle up to 50 cm long. Erect, tussocky herb up to 1.2 m high. Widespread. Usually in or near water. Fl. after flooding. Brown Beetle Grass