Difference between revisions of "Carex sect. Albae"
in H. G. A. Engler, Pflanzenr., 20[IV,38]: 499. 1909.
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Revision as of 21:05, 16 December 2019
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.
Distribution
Cool temperate regions of the Northern Hemisphere.
Discussion
Species 4 (2 in the flora).
Selected References
None.
Lower Taxa
Key
| 1 | Pistillate scales 1–2 mm; perigynia 1.5–2.2 mm; beak 0.2–0.4(–0.5) mm. | Carex eburnea |
| 1 | Pistillate scales 2.1–3.5 mm; perigynia 2.2–2.9 mm; beak 0.5–0.7 mm. | Carex mckittrickensis |