Poaceae

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

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

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Spikelets not as in Group 13

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Inflorescence branched (Fig. 47k)

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Hairs around the florets much shorter than the lemmas or absent

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Inflorescence not digitate

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Either; spikelets with 2 or more bisexual florets; or with 1 bisexual and 1 male or sterile lemma above

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Either; spikelets with 1 bisexual floret only; or with 1 bisexual and 1–2 male or sterile lemmas below (the spikelets may appear to have 1 floret from the outside; sometimes sterile spikelets are present as well as those containing a bisexual floret)