Cyperus filiculmis

Vahl

Enum. Pl. 2: 328. 1805.

IllustratedEndemic
Synonyms: Cyperus martindalei Brittton
Treatment appears in FNA Volume 23. Treatment on page 175. Mentioned on page 144, 147, 176.

Herbs, perennial, cespitose, bases cormose; rhizomes knotted, beaded. Culms trigonous, 15–48 cm × 0.4–1 mm, glabrous. Leaves flat, 10–30 cm × 0.5–2 mm. Inflorescences: spikes rather densely ovoid, 1–3.5 cm; rays 0 (sometimes 1–4), 1–6 cm; rachis 1–4 mm; bracts 3–4, horizontal to slightly reflexed, flat, 6–25 cm; rachilla ± deciduous, wingless. Spikelets 25–60, compressed, oblong-lanceoloid, 5–12 × 2.2–3.5 mm; floral scales deciduous, 5–15, yellowish to yellowish brown, laterally 4–5-ribbed, oblong-ovate, 2.6–3.6 × 1.4–2 mm, margins loosely spreading or clasping achene. Flowers: anthers 0.8–1 mm; styles 1 mm; stigmas 1.5–2.5 mm. Achenes dark grayish brown, sessile, narrowly oblong, 1.8–2.2 × 0.5–0.8 mm, apex obtuse, apiculate, surfaces puncticulate.


Phenology: Fruiting summer.
Habitat: Well-drained, open roadsides, fields, pine barrens, dunes
Elevation: 0–200 m

Distribution

V23 294-distribution-map.jpg

Ala., Fla., Ga., La., Md., Miss., N.C., S.C., Tex., Va.

Discussion

Cyperus filiculmis has long been treated within a broader and more widely used concept of C. filiculmis (C. lupulinus); see B. G. Marcks (1974)

Selected References

None.

Lower Taxa

None.
... more about "Cyperus filiculmis"
Gordon C. Tucker* +, Brian G. Marcks* +  and J. Richard Carter * +
Ala. +, Fla. +, Ga. +, La. +, Md. +, Miss. +, N.C. +, S.C. +, Tex. +  and Va. +
0–200 m +
Well-drained, open roadsides, fields, pine barrens, dunes +
Fruiting summer. +
Illustrated +  and Endemic +
Cyperus martindalei +
Cyperus filiculmis +
Cyperus subg. Cyperus +
species +