Cyperus lupulinus subsp. macilentus

(Sprengel) Marcks

Trans. Wisconsin Acad. Sci. 62: 275. 1974.

IllustratedEndemic
Basionym: Cyperus filiculmis var. macilentus Fernald Rhodora 8: 128. 1906
Synonyms: Cyperus macilentus (Fernald) E. P. Bicknell
Treatment appears in FNA Volume 23. Treatment on page 177. Mentioned on page 176.

Culms (3–)10–30(–40) cm × 0.4–0.8 mm. Leaves 5–20 cm × 0.8–2.7 mm. Inflorescences: spikes densely ovoid, 8–16 mm; rays 0 or 1–3, 1–4 cm; bracts 2–4, 4–15 cm. Spikelets 20–60, 3–7 × 2.5–3.5 mm; floral scales 3–7, 1.8–2.5 × 1.4–1.8 mm, margins clasping achene, apex mucronate, mucro 0.05–0.2 mm. Achenes 1.4–1.8 × 0.6–0.9 mm.


Phenology: Fruiting summer
Habitat: Various well-drained, open places
Elevation: 0–1000 m

Distribution

V23 297-distribution-map.jpg

N.B., N.S., Ont., Que., Conn., Del., D.C., Ga., Ill., Ind., Iowa, Maine, Md., Mass., Mich., Minn., Nebr., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., Vt., Va., W.Va., Wis.

Discussion

Selected References

None.

Lower Taxa

None.
Gordon C. Tucker* +, Brian G. Marcks* +  and J. Richard Carter * +
(Sprengel) Marcks +
Cyperus filiculmis var. macilentus +
N.B. +, N.S. +, Ont. +, Que. +, Conn. +, Del. +, D.C. +, Ga. +, Ill. +, Ind. +, Iowa +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Nebr. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, Vt. +, Va. +, W.Va. +  and Wis. +
0–1000 m +
Various well-drained, open places +
Fruiting summer +
Trans. Wisconsin Acad. Sci. +
Illustrated +  and Endemic +
Cyperus macilentus +
Cyperus lupulinus subsp. macilentus +
Cyperus lupulinus +
subspecies +