Spikelets arranged spicately on the rhachis of the ultimate branches of the inflorescence in the form of very short or ± elongated spikes. Rhachilla of spikelet bordered by hyaline wings, but these are sometimes deciduous
Spikelets ± digitate or fasciculate in clusters on a very reduced rhachis, sometimes very few in number or solitary and then sometimes appearing lateral when the lowest involucral bract is erect. Rhachilla winged or not