Carex umbellata Schkuhr ex Willd.
-
Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
-
Family
Cyperaceae
-
Scientific Name
-
Description
Species Description - Densely cespitose and basally fibrillose; stems 5–10(–20) cm, much surpassed and often concealed by the lvs; lvs 1–5 mm wide; staminate spike terminal, 5–10 mm, sometimes with a short pistillate spike just beneath it, the subtending bract of this pistillate spike scale-like and shorter than the staminate spike; 1–3 near-basal, short pedunculate pistillate spikes 4–10 mm generally associated with each flowering stem, ± removed from the terminal staminate spike; pistillate scales acute to short-cuspidate, about as long and wide as the greenish perigynia; perigynia 2.5–4 mm, finely hairy or glabrous, obovoid, 2-keeled above, tipped with a prominent, 2-edged, often curved, bidentate beak 0.5–1.5 mm; achene rounded-trigonous; 2n=32. Dry to moist soil, in shade or sun; Nf. to B.C., s. to Va., Ga., Mo., and Tex. (C. abdita; C. rugosperma, with a relatively long perigynium-beak; C. tonsa)