All Floras      Advanced Search
FNA Vol. 23 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 23 | Cyperaceae | Carex

26ggg. CAREX Linnaeus sect. ALBAE (Ascherson & Graebner) Kükenthal in H. G. A. Engler, Pflanzenr. 20[IV,38]: 499. 1909.

Peter W. Ball

Carex [unranked] Albae Ascherson & Graebner in P. F. A. Ascherson et al., Syn. Mitteleur. Fl. 2(2): 156. 1903

Plants cespitose, long-rhizomatous. Culms brown at base. Leaves: basal sheaths not fibrous; sheath fronts membranous; blades V-shaped in cross section when young, threadlike, not more than 1 mm wide, glabrous. Inflorescences racemose, with 3–5 spikes; bracts bladeless, sheathing; lateral spikes pistillate, pedunculate, prophyllate; terminal spikes staminate. Proximal pistillate scales with apex subacute to subobtuse. Perigynia erect, weakly veined on faces, with 2 strong marginal veins, ellipsoid-ovoid, trigonous, base tapering, apex tapering to abrupt beak, glabrous; beak 0.2–0.7 mm, orifice subentire. Stigmas 3. Achenes trigonous, almost as large as bodies of perigynia; style deciduous.

Species 4 (2 in the flora): cool temperate regions of the Northern Hemisphere.

1 Pistillate scales 1–2 mm; perigynia 1.5–2.2 mm; beak 0.2–0.4(–0.5) mm.   452 Carex eburnea
+ Pistillate scales 2.1–3.5 mm; perigynia 2.2–2.9 mm; beak 0.5–0.7 mm.   453 Carex mckittrickensis

Lower Taxa


 |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |