Xyris difformis var. floridana
Sida 2: 256. 1966.
Herbs, mostly 20–50(–60) cm. Leaves ascending in broad to narrow fans, (10–)15–25(–28) cm; sheaths reddish or purplish, rugulose-papillate; blade dull green, linear, 1.5–6 mm wide, papillate, margins somewhat scabrous. Inflorescences: scape sheaths proximally lustrous brown, shading distally to red tones; scapes linear, not widened distally, papillate or minutely scabrous, sharply multiribbed distally, ribs all equally prominent, somewhat scabrous; spikes 6–10(–15) mm. Seeds mealy.
Phenology: Flowering summer–fall.
Habitat: Moist to wet sands or sandy peats of bogs, pine savanna, shores, and seeps
Elevation: 0–200 m
Ala., Fla., Ga., La., Miss., N.C., S.C., Central America (Belize, Honduras, Nicaragua).