Carex sect. Deweyanae (Tuckerman ex Mackenzie) Mackenzie in N. L. Britton et al. (Q147)

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Carex sect. Deweyanae is a taxon with the rank section within the genus Carex
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Carex sect. Deweyanae (Tuckerman ex Mackenzie) Mackenzie in N. L. Britton et al.
Carex sect. Deweyanae is a taxon with the rank section within the genus Carex

    Statements

    taxon/id/Carex sect. Deweyanae (Tuckerman ex Mackenzie) Mackenzie
    0 references
    Carex sect. Deweyanae (Tuckerman ex Mackenzie) Mackenzie
    Carex sect. Deweyanae
    (Tuckerman ex Mackenzie) Mackenzie
    FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
    accepted
    Carex sect. Deweyanae
    (Tuckerman ex Mackenzie) Mackenzie
    North America
    e Asia
    Plants densely to loosely cespitose, short to long rhizomatous.
    Culms brown at base.
    Leaves: basal sheaths fibrous;
    blades flat or V-shaped in cross-section when young, glabrous.
    Inflorescences racemose with (2–) 3–9 spikes;
    proximal bracts filiform or leaflike, sheathless;
    lateral spikes gynecandrous or pistillate, rarely staminate or androgynous, sessile, without prophylls;
    terminal spike usually gynecandrous.
    Proximal pistillate scales whitish to castaneous, hyaline margins and green, 1-veined center, apex acute or short-awned.
    Perigynia appressed-erect to spreading, occasionally recurved, veined or veinless on both faces, sessile, ovate to narrowly lanceolate, planoconvex, base cuneate to rounded, with spongy tissue, margins acutely angled, serrulate or entire distally, apex tapering or abruptly beaked, glabrous;
    beak 0.4–2.5 (–2.8) mm, with abaxial suture usually nearly closed, margins entire or serrulate, apex entire to shortly bidentate.
    Achenes brown, sessile, biconvex or planoconvex, almost as large as bodies of perigynia, apex rounded;
    style deciduous, enlarged at base.