Cyperus ovatus Baldwin
Synonym: Cyperus retrorsus Chapman
Pinebarren Flatsedge
Distribution: New Jersey to Mexico
Habitat: Often in dry sand, high pine woods, scrub
Florida status: Native, common
Recognition: Spikelet clusters cylindric, thimble-shaped.
Cyperus ligularis has cylindirc spikelet clusters too, but differs by being a much larger plant (culm ca. 1 cm in diameter basally vs. much smaller) and dark brown (vs. pale) spikelets.
Cyperus ovatus differs from C. croceus by having more-cylindric spikelet clusters, and 40-120 (vs. 10-50) rounded (vs. flat) spikelets.