Show Lower Taxa
Cyperus lupulinus
Trans. Wisconsin Acad. Sci. 62: 275. 1974.
Basionym: Cyperus filiculmis var. macilentus Fernald
Synonyms: Cyperus macilentus (Fernald) E. P. Bicknell
Revision as of 01:44, 27 July 2019 by FNA>Volume Importer
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
Subspecies 2 (2 in the flora).
Selected References
None.
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