familyCyperaceae
genusCyperus
subgenusCyperus subg. Cyperus
speciesCyperus lupulinus
subspeciesCyperus lupulinus subsp. macilentus
Cyperus lupulinus subsp. macilentus
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
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
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.