Show Lower Taxa
Cyperus lupulinus
Synonyms: Cyperus bushii Britton
Treatment appears in FNA Volume 23. Treatment on page 176.
Revision as of 16:06, 18 September 2019 by FNA>Volume Importer
Culms 10–50 cm × 0.4–1.7 mm. Leaves 12–40 cm × 0.8–3.5 mm. Inflorescences: spikes loosely to densely ovoid, 8–16 mm; rays 0or 1–4, 1–6 cm; bracts 2–4, 6–25 cm. Spikelets 15–40(–60), 6–22 × 3–4 mm; floral scales 5–22, 2.5–4 × 2–2.6 mm, margins not clasping achene. Achenes 1.7–2.2 × 0.8–1.2 mm.
Phenology: Fruiting summer
Habitat: Well-drained, open roadsides, fields, prairies
Elevation: 0–1700 m
Distribution
Ont., Ark., Colo., Conn., Del., Idaho, Ill., Ind., Kans., Ky., Mass., Mich., Minn., Mo., N.J., N.Y., N.C., Ohio, Oreg., Pa., R.I., Tenn., Tex., Vt., Va., W.Va., Wis.
Discussion
Subspecies 2 (2 in the flora).
Selected References
None.