Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Commelinids: Poales
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Keith Bradley kab_carex_longii_73524
March Collier County FL
Fakahatchee Strand Preserve State Park
Inflorescences erect, 1-4.5cm long; spikes slightly separated to congested, per Weakley's Flora.