Cyperus filiculmis Vahl

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

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.

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

Fruiting summer.

Well-drained, open roadsides, fields, pine barrens, dunes; 0–200m.

Cyperus martindalei Brittton

Cyperus filiculmis is a species of sedge that is native to southern parts of North America.

The species was first formally described by the botanist Martin Vahl in 1805.

Cyperus filiculmis adalah spesies tumbuhan yang tergolong ke dalam famili Cyperaceae. Spesies ini juga merupakan bagian dari ordo Poales. Spesies Cyperus filiculmis sendiri merupakan bagian dari genus Cyperus. Nama ilmiah dari spesies ini pertama kali diterbitkan oleh Vahl.

Cyperus filiculmis là loài thực vật có hoa trong họ Cói. Loài này được Vahl mô tả khoa học đầu tiên năm 1805.