Carex sect. Ceratocystis Dumortier (Q113)

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Carex sect. Ceratocystis is a taxon with the rank section within the genus Carex
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Carex sect. Ceratocystis Dumortier
Carex sect. Ceratocystis is a taxon with the rank section within the genus Carex

    Statements

    taxon/id/Carex sect. Ceratocystis Dumortier
    0 references
    Carex sect. Ceratocystis Dumortier
    Carex sect. Ceratocystis
    Dumortier
    FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
    accepted
    Carex sect. Ceratocystis
    Circumboreal
    north and south temperate regions in North America
    Europe
    Australia
    Plants cespitose or not, short-rhizomatous.
    Culms brown at base.
    Leaves: basal sheaths not fibrous;
    blades sparsely septate-nodulose, usually V-shaped in cross-section when young, glabrous.
    Inflorescences racemose, with 2–6 spikes;
    proximal nonbasal bracts leaflike, long-sheathing, shorter or longer than diameter of stem;
    lateral spikes pistillate, rarely distal androgynous, larger spikes with not more than 40 perigynia, dense, pedunculate, prophyllate;
    terminal spike staminate or, occasionally, androgynous.
    Proximal pistillate scales with apex obtuse, acute, or cuspidate.
    Perigynia ascending, spreading, or reflexed, proximal and middle perigyinia separated by internodes less than 1/10 their length, yellowbrown to brown, strongly veined on faces, slightly stipitate, obovoid or, rarely, narrowly ovoid, rounded-trigonous, less than 10 mm, base tapering to rounded, apex abruptly contracted or, rarely, tapering to beak, glabrous;
    beak bidentate, teeth less than 0.5 mm.
    Achenes trigonous, 1–2 mm, smaller than bodies of perigynia;