Gahnia R.J.Forst. & G.Forst.

Leaves with a ligule. Lower flower abortive or male Gahnia
Spikelets with 3 flowers; an apparently terminal bisexual one with a fertile and a male flower below it
Basal sterile glumes more than 10; the lowest ones less than half as long as the spikelet
Sterile glumes fewer than 10, the lowest ones mostly more than half as long as the spikelet