Carex laxa Wahlenberg (Q377)

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Carex laxa is a taxon with the rank species within the section Carex sect. Paniceae
Language Label Description Also known as
English
Carex laxa Wahlenberg
Carex laxa is a taxon with the rank species within the section Carex sect. Paniceae

    Statements

    taxon/id/Carex laxa Wahlenberg
    0 references
    Carex laxa Wahlenberg
    Carex laxa
    Wahlenberg
    FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
    accepted
    carex lâche (French)
    slack sedge (English)
    weak sedge (English)
    1 reference
    Porsild, A.E. & W.J. Cody. 1980. Vascular Plants of the Continental Northwest Territories, Canada. National Museum of Natural Sciences, Ottawa, Ont. 667 pp.
    1 reference
    Cody, W.J. 2000. Flora of the Yukon Territory. 2nd ed. National Research Press, Ottawa. 669 pp.
    Eurasia
    Plants colonial, long-rhizomatous.
    Culms 15–40 cm, smooth distally.
    Leaves: proximal sheaths greenish to pale brownish, ± spongy and septate-nodulose;
    ligules 1.4–3.5 mm, longer than wide;
    blades green, ± flat, 2–25 cm × 1–2.5 (–3.5) mm, those of fertile and vegetative shoots similar.
    Inflorescences 4–12 (–20) cm, 1.25–2.75 times longer than proximal bract;
    proximal bracts 1.8–7 (–13) cm, sheaths 0.9–2.2 (–3.5) cm, blades 0.9–5 (–9.5) cm;
    pistillate spikes 1–2, short cylindric, 0.6–1.5 cm × 4–6 mm;
    lateral spikes nodding on flexible peduncles.
    Pistillate scales reddish-brown tinged, ovate, broadly acute or obtuse.
    Perigynia (3–) 5–18, dense, glaucous-green, finely many-veined, 2.8–4 × 1.2–1.5 mm, apex gradually tapered to entire orifice, papillose;
    beak absent or poorly defined, to 0.3 mm.
    Achenes light to dark-brown, 1.5 –1.9 × 1–1.2 mm.