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)

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Spikelets in pairs (or rarely triplets), usually one sessile and awned, the other pedicellate and awnless (Fig. 50 l). The sessile spikelet can be sunken into the thick rhachis (Fig. 47 h) or; the two spikelets are similar, awnless and surrounded by silky hairs or; the pedicellate spikelet is reduced to the pedicel (Fig. 50 n). Spathe present just below the inflorescence in some genera.

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Spikelets not as in Group 13