Cyperus grayi

Torrey

Ann. Lyceum Nat. Hist. New York 3: 268. 1836.

Common names: Gray’s sedge
IllustratedEndemic
Synonyms: Cyperus filiculmis var. grayi (Torrey) Boeckeler Cyperus filiculmis var. oblitus Fernald & Griscom
Treatment appears in FNA Volume 23. Treatment on page 179. Mentioned on page 144, 146, 178.

Herbs, perennial, cespitose, rhizomatous. Culms basally cormlike, trigonous, 5–40 cm × 0.5–1.3 mm, glabrous. Leaves V-shaped, 5–25 cm × 1–3 mm, slightly minutely scabridulous abaxially on margins, midrib. Inflorescences: spikes loosely ± globose, 6–20 mm wide; rays 1–8 cm; rachis 1–4 mm; bracts 3–8, ascending, V-shaped, 3–20 cm × 1–3 mm; rachilla deciduous, wings hyaline, 0.6 mm wide. Spikelets 3–18(–28), oblong-lanceoloid, compressed, 3–12 × 1.8–2.5 mm; floral scales deciduous, 2–11, yellowish brown to reddish brown, laterally 3–4-ribbed, ovate, 2–2.8 × 1.6–2.2 mm, apex mucronulate. Flowers: anthers 0.7–1 mm; styles 0.4–0.6 mm; stigmas 1–2 mm. Achenes dark brown, ± stipitate, ellipsoid, 1.5–2 × 0.7–1 mm, apex obtuse, apiculate surfaces glabrous or puncticulate. 2n = 166.


Phenology: Fruiting summer.
Habitat: Coastal dunes, well-drained woods, railroad yards
Elevation: 0–200 m

Distribution

V23 302-distribution-map.jpg

Conn., Del., Ga., Md., Mass., N.H., N.J., N.Y., N.C., Pa., R.I., S.C., Va.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Cyperus grayi"
Gordon C. Tucker* +, Brian G. Marcks* +  and J. Richard Carter * +
Torrey +
Gray’s sedge +
Conn. +, Del. +, Ga. +, Md. +, Mass. +, N.H. +, N.J. +, N.Y. +, N.C. +, Pa. +, R.I. +, S.C. +  and Va. +
0–200 m +
Coastal dunes, well-drained woods, railroad yards +
Fruiting summer. +
Ann. Lyceum Nat. Hist. New York +
Illustrated +  and Endemic +
Cyperus filiculmis var. grayi +  and Cyperus filiculmis var. oblitus +
Cyperus grayi +
Cyperus subg. Cyperus +
species +