Cyperus
alternifolius
Non-Native in Florida
Umbrella flat sedge
Umbrella flat sedge
is a NON-NATIVE sedge. stems clump-forming, solid,
triangular, to 4 1/2 ft. tall, to 3/4 in. wide near base; leaf blades none, just
sheaths wrapping stem base; bracts of inflorescence conspicuous, leaf-like, a
clusster of 10-25, mostly longer than the inflorescence; inflorescence a central
spikelet cluster including 15-25 stalked clusters, each cluster having 8-15 spikelets;
spikelets long and thin, to 3/8 in. long, obvious overlapping scales, 15-30
flowers; nutlet brown, 3-angled, tiny
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