Cyperus dentatus

Torrey

Fl. N. Middle United States 1: 61. 1824.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 151. Mentioned on page 144, 150.

Herbs, perennial, cespitose, rhizomatous; stolons tuberiferous, 1–10 cm. Culms trigonous, 8–50 cm × 1–3 mm. Leaves flat or V-shaped, 10–40 cm × 2–5 mm. Inflorescences: heads digitate, 8–18 mm diam.; rays 4–9, 1–8 cm; 2d order rays 0.5–2 cm; bracts 3–5, ± horizontal, flat, 1–20 cm × 1–4 mm. Spikelets commonly proliferous, 2–6, linear to oblong, compressed, 3–24 × 2–2.5 mm; floral scales 3–20(–50), reddish brown, laterally 1–3-ribbed, ovate, 2–2.5 × 1.5–2 mm. Flowers: stamens 3; anthers 1.5 mm; styles 1 mm; stigmas 1.5 mm. Achenes reddish brown, sessile, obovoid, 0.8–1 × 0.4–0.5 mm, apex obtuse, scarcely apiculate, surfaces glabrous.


Phenology: Fruiting summer.
Habitat: Emergent sandy, peaty, or gravelly shorelines
Elevation: 0–600 m

Distribution

V23 229-distribution-map.jpg

N.B., N.S., Ont., Que., Conn., Del., D.C., Ind., Maine., Md., Mass., N.H., N.Y., N.C., Pa., R.I., S.C., Tenn., Vt., Va.

Discussion

The report of Cyperus dentatus from West Virginia (M. V. McGivney 1938) is erroneous; the cited specimen was from New Jersey (Gutenberg s.n. 1886, US) (M. Strong, pers. comm.).

Selected References

None.

Lower Taxa

None.
... more about "Cyperus dentatus"
Gordon C. Tucker* +, Brian G. Marcks* +  and J. Richard Carter * +
Torrey +
N.B. +, N.S. +, Ont. +, Que. +, Conn. +, Del. +, D.C. +, Ind. +, Maine. +, Md. +, Mass. +, N.H. +, N.Y. +, N.C. +, Pa. +, R.I. +, S.C. +, Tenn. +, Vt. +  and Va. +
0–600 m +
Emergent sandy, peaty, or gravelly shorelines +
Fruiting summer. +
Fl. N. Middle United States +
Illustrated +  and Endemic +
Cyperus subg. Protocyperus +
Cyperus dentatus +
Cyperus subg. Pycnostachys +
species +