Poaceae

Perianth segments 0–3, usually 2; flowers grouped into a characteristic spikelet (Fig. 48) Poaceae

Spikelets bisexual (rarely unisexual, and if so, the spikelets similar and in the same inflorescence)

Spikelets not as in Group 13

Inflorescence a solitary spike or raceme (Fig. 47)

Spikelets not sunken in the rhachis, although the bases alone may be slightly sunken

Glume 1, except 2 in the terminal spikelet

Fertile spikelets with one floret; bisexual and sterile spikelets mixed, pendulous in a 1-sided inflorescence Lamarckia

Spikelets with 2 or more florets