Tetrarrhena R.Br.

6 species endemic Aust.; all states and territories except NT

Spikelets with 1 terminal bisexual floret and 2 sterile lemmas below it, sessile or almost so, in a simple spike or spike-like panicle. Glumes unequal. Sterile lemmas subequal, awnless, keeled. Fertile lemmas 2–3 mm long, membranous. Stamens 4. Leaf blades flat or inrolled; ligule a ciliate rim.