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
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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.