Carex sect. Spirostachyae (Drejer) L. H. Bailey in J. M. Coulter (Q544)
Carex sect. Spirostachyae is a taxon with the rank section within the genus Carex
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English |
Carex sect. Spirostachyae (Drejer) L. H. Bailey in J. M. Coulter
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Carex sect. Spirostachyae is a taxon with the rank section within the genus Carex
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Statements
taxon/id/Carex sect. Spirostachyae (Drejer) L.H. Bailey
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Carex sect. Spirostachyae (Drejer) L.H. Bailey
Carex sect. Spirostachyae
(Drejer) L.H. Bailey
FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
accepted
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Plants cespitose, short-rhizomatous.
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Culms redbrown at base.
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Leaves: basal sheaths not fibrous;
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blades not or sparingly septate-nodulose, V-shaped in cross-section when young, glabrous.
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Inflorescences racemose, with 3–6 spikes;
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proximal nonbasal bracts leaflike, long-sheathing, sheath 4+ mm, longer than diameter of stem;
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lateral spikes pistillate, pedunculate, peduncle usually not longer than spike, prophyllate;
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terminal spike staminate.
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Proximal pistillate scales with apex acute or cuspidate.
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Perigynia ascending or spreading, yellow-or gray-green or brown, usually speckled reddish-brown, strongly 10–16-veined, elliptic or ovate, rounded-trigonous in cross-section, base cuneate, apex tapering to beak, glabrous;
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beak 0.4–1.4 mm, bidentate, teeth 0.2–0.4 mm.
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Achenes trigonous, smaller than bodies of perigynia;
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