Carex seorsa Howe in H. C. Gordinier and E. C. Howe (Q561)

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Carex seorsa is a taxon with the rank species within the section Carex sect. Stellulatae
Language Label Description Also known as
English
Carex seorsa Howe in H. C. Gordinier and E. C. Howe
Carex seorsa is a taxon with the rank species within the section Carex sect. Stellulatae

    Statements

    taxon/id/Carex seorsa Howe
    0 references
    Carex seorsa Howe
    Carex seorsa
    FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
    accepted
    carex à épis disjoints (French)
    weak stellate sedge (English)
    swamp star sedge (English)
    1 reference
    Newmaster, S.G. & S. Ragupathy. 2005. Flora Ontario - Integrated Botanical Information System (FOIBIS), Phase I. University of Guelph, Canada. http://www.uoguelph.ca/foibis http://www.uoguelph.ca/foibis/
    peaty hardwood
    chamaecyparis swamps
    acidic
    thickets
    Leaves 2–4 per culm;
    sheaths with inner band hyaline, 3.5–12 cm, apex deeply concave, glabrous;
    ligules 1.7–7 mm, apex acute or often emarginate;
    blades plicate to flat, 9–50 cm × 0.8–3.9 mm, widest leaf 2.1–3.9 mm wide.
    Inflorescences 1.8–7 cm;
    lateral spikes pistillate often with few staminate flowers proximally, 2.8–10.8 mm, sessile, staminate portion (0–) 1–6-flowered, (0–) 0.8–4.6 mm, pistillate portion 4–25-flowered, 2–7.6 mm;
    basal 2 spikes 5–27 mm apart;
    terminal spike gynecadrous, 4.7–16.5 mm, staminate portion 3–13-flowered, 1.8–12.7 × 0.9–2.1 mm, pistillate portion 6–23-flowered, 2.8–7.3 × 4.4–6 mm.
    Pistillate scales ovate, 1.2–2.2 × 1–1.6 mm, apex acute.
    Staminate scales ovate, 1.7–3.3 × 1–1.4 mm, apex acute.
    Anthers 1–1.9 mm.
    Perigynia spreading to reflexed, green, 6–14-veined abaxially, 0–6-veined adaxially over achene, elliptic to elliptic-ovate, 1.8–2.9 × 1–1.9 mm, 1.2–2.1 times as long as wide;
    beak 0.2–0.6 mm, 0.09–0.33 length of body, smooth.
    Achenes ovate to orbiculate, 1.2–1.6 × 0.85–1.4 mm.