Difference between revisions of "Carex sect. Circinatae"
Trudy Imp. S.-Petersburgsk. Bot. Sada 18(3): 280. 1901.
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Latest revision as of 21:44, 5 November 2020
Plants cespitose or not, short- or long-rhizomatous. Culms pale brown at base. Leaves: basal sheaths not or scarcely fibrous; sheath fronts membranous; blades threadlike or V-shaped in cross section, glabrous. Inflorescence 1 spike; bracts absent; spike androgynous or pistillate, lax. Proximal pistillate scales persistent, exceeding perigynia, apex cuspidate or awned. Perigynia not more than 15, erect, weakly veined, linear-lanceolate, obscurely trigonous, 3–6 mm, 3–4 times as long as wide, base tapering, margins rounded, apex tapering to beak, glabrous; beak less than 2 mm, orifice obliquely cleft. Stigmas (2–)3. Achenes usually trigonous, 1.5–2.5 mm, smaller than bodies of perigynia; style deciduous.
Distribution
North America, amphi-Pacific.
Discussion
Species 4 (2 in the flora).
Selected References
None.
Lower Taxa
Key
| 1 | Plants cespitose, short-rhizomatous; leaves involute; distal margins of perigynia finely serrulate. | Carex circinata |
| 1 | Plants not cespitose, long-rhizomatous; leaves flat; distal margins of perigynia smooth. | Carex anthoxanthea |