| Group A (unisexual spikelets only, staminate and pistillate spikelets conspicuously different) |
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Group B
(1 floret/spikelet; spike or spicate raceme)
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Group C
(1 floret/spikelet; panicles without spicate primary unilateral
branches)
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Group D
(1 floret/spikelet; panicle with spicate primary unilateral
branches)
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Group E
(2 florets/spikelet; spikelets paired; reduced floret below
perfect floret)
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Group F
(2 or 3 florets/spikelet; reduced floret or florets below
perfect floret; panicle inflorescences)
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Group G
(2 or more florets/spikelet; spike or spicate raceme)
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Group H
(2 or more florets/spikelet; inflorescence a panicle of
spicate primary unilateral branches)
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Group I
(2 or more florets/spikelet; reduced floret at spikelet apex; panicle
inflorescence)
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