Xyris longisepala


Sida2: 245. 1966

Found in FNA Volume 22.
FNA22 P30 Xyris pg 163.jpeg
Herbs, perennial, cespitose, 30–90 cm. Stems compact. Leaves ascending in narrow fans, 6–30 cm; sheaths pinkish, soft, smooth; blade pale green to pale red-brown, narrowly linear, 1–2(–3) mm wide, smooth, margins smooth. Inflorescences: scape sheaths exceeded by leaves; scapes linear, slightly twisted, nearly terete, 0.7–1 mm, smooth, distally striate or 1-ribbed; spikes ellipsoid to narrowly obovoid, 10–16 mm; fertile bracts 4–6 mm, margins entire, aging to erose, apex rounded. Flowers: lateral sepals exserted, linear-curvate, 0.5–1 mm longer than subtending bract, keel scarious, lacero-ciliate, apex not red, thin, lacero-fimbriate; petals unfolding around noon or in afternoon, blade obovate, 3.5 mm; staminodes bearded. Seeds translucent, ellipsoid, 0.4–0.6 mm, distinctly longitudinally ribbed with few, indistinct cross ribs.

Phenology: Flowering summer–fall.
Habitat: Moist to wet sandy borders of dolines, sandy swales in longleaf pine hills
Elevation: 0–200 m


Ala., Fla.


Taxonomically, Xyris longisepala is nearest to X. smalliana, a frequent associate around the dolines. Xyris smalliana is taller, with broader leaves, broader scapes, longer spikes, and longer seeds. The flowering time of day overlaps, but X. longisepala blooms first.

Of conservation concern.



Facts about "Xyris longisepala"
AuthorRobert Kral +
Elevation0–200 m +
HabitatMoist to wet sandy borders of dolines, sandy swales in longleaf pine hills +
IllustratorYevonn Wilson-Ramsey +
PhenologyFlowering summer–fall. +
ReferenceNone +
Taxon nameXyris longisepala +
Taxon parentXyris +
Taxon rankspecies +
VolumeVolume 22 +