Carex sect. Racemosae G. Don in J. C. Loudon (Q508)

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Carex sect. Racemosae is a taxon with the rank section within the genus Carex
Language Label Description Also known as
English
Carex sect. Racemosae G. Don in J. C. Loudon
Carex sect. Racemosae is a taxon with the rank section within the genus Carex

    Statements

    taxon/id/Carex sect. Racemosae G. Don
    0 references
    Carex sect. Racemosae G. Don
    Carex sect. Racemosae
    FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
    accepted
    Carex sect. Racemosae
    Dry plains
    wetlands
    arctic
    alpine tundras in North America and Eurasia
    Plants loosely or densely cespitose, sometimes long rhizomatous or stoloniferous;
    roots brown or black without yellowbrown felty covering.
    Culms purple or red at base.
    Leaves: basal sheaths usually fibrous;
    sheath fronts membranous, mouth entire, proximal leaves, often dotted or tinged red or purple, rarely prominently veined and becoming ladder-fibrillose, glabrous;
    blades V-shaped in cross-section when young, smooth or papillose.
    Inflorescences racemose, with 1–10 spikes;
    proximal bracts threadlike or, rarely, scalelike, sheathless, abaxial surface papillose;
    lateral spikes pistillate, rarely, gynecandrous with few staminate flowers, pedunculate, prophyllate;
    terminal spike gynecandrous with few perigynia, staminate, or pistillate.
    Proximal pistillate scales brown or black, not ciliate, apex obtuse to shortly awned.
    Perigynia erect or ascending, veined or veinless on faces, with 2 distinct marginal veins, sessile, obovoid to suborbicular, rounded or somewhat compressed in cross-section, base cuneate to ± rounded, apex tapering or rounded to beak or rarely beakless, smooth or papillose, glabrous;
    beak entire or shortly bidentate.
    Achenes trigonous, smaller than to almost filling bodies of perigynia;