Illustrator: Yevonn Wilson-Ramsey

Copyright: Flora of North America Association

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

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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.

Lower Taxa

Cyperus lupulinus subsp. lupulinus, Cyperus lupulinus subsp. macilentus