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FNA | Family List | FNA Vol. 23 | Cyperaceae | Carex

26yy. CAREX Linnaeus sect. CIRCINATAE Meinshausen, Trudy Imp. S.-Petersburgsk. Bot. Sada. 18(3): 280. 1901.

David F. Murray

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.

Species 4 (2 in the flora): North America, amphi-Pacific.

1 Plants cespitose, short-rhizomatous; leaves involute; distal margins of perigynia finely serrulate.   416 Carex circinata
+ Plants not cespitose, long-rhizomatous; leaves flat; distal margins of perigynia smooth.   417 Carex anthoxanthea

Lower Taxa


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