Carex striatula Michaux (Q279)

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Carex striatula is a taxon with the rank species within the section Carex sect. Laxiflorae
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Carex striatula Michaux
Carex striatula is a taxon with the rank species within the section Carex sect. Laxiflorae

    Statements

    taxon/id/Carex striatula Michaux
    0 references
    Carex striatula Michaux
    Carex striatula
    Michaux
    FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
    accepted
    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/
    dry to moist ravine slopes
    deciduous
    mixed deciduous-evergreen forests
    0–600 m
    Culms densely tufted, central or lateral, ascending or slightly decumbent, 45–62 cm × 0.5–1 mm.
    Leaves: basal sheaths tan or light-brown;
    sheaths green, sometimes glaucous, 4–88 mm;
    blades green, sometimes glaucous, midrib and 2 lateral-veins developed, flat or slightly corrugate, 30–46 cm × 3–14 mm, blades of overwintering leaves smooth or, rarely, sparsely papillose abaxially.
    Inflorescences: peduncles of proximal spikes 0–5 cm, arising from proximal 1/3 of culms, 1.4–3.3 (–5.3) times as long as spikes they subtend;
    of terminal spikes 0.4–12 cm.
    Bracts 0.6–14 cm × 0.8–6 mm, bract blades of distal lateral spikes linear, narrower than spikes, widest bract blade of distalmost lateral spike 0.5–3.4 mm wide.
    Spikes 3 (–4) per culm;
    lateral spikes 22–62 × 3–5 mm;
    distal lateral spikes separate;
    terminal spike linear to linear-clavate, 22–32 (–36) × 2–3 mm.
    Pistillate scales 3.4–5 × 1.2–2.2 mm, apex aristate, apiculate, or acute.
    Staminate scales oblongovate, 3–5 × 1.2–2 mm, margins hyaline or, occasionally, light-brown, apex obtuse or acute.
    Anthers 3–3.2 mm.
    Perigynia 6–18 per spike, scattered to loosely overlapping, ratio of longer lateral spike length to perigynia number 1.9–3.4, ascending, finely, conspicuously (22–) 25–32-veined, elongate, (3.4–) 3.9–5.1 × 1.2–2 mm;
    beak straight or slightly curved, 0.6–1.7 mm.
    Achenes elongate-obovoid, 2.2–2.8 (–4.6) × 1–1.8 mm. 2n = 36, 40.