Carex jamesii Schweinitz (Q494)

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Carex jamesii is a taxon with the rank species within the section Carex sect. Phyllostachyae
Language Label Description Also known as
English
Carex jamesii Schweinitz
Carex jamesii is a taxon with the rank species within the section Carex sect. Phyllostachyae

    Statements

    taxon/id/Carex jamesii Schweinitz
    0 references
    Carex jamesii Schweinitz
    Carex jamesii
    Schweinitz
    FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
    accepted
    carex de James (French)
    James' sedge (English)
    grass sedge (English)
    James’s sedge (English)
    grass 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/
    rich ravines
    plains
    hardwood forests
    lime-rich substrates
    cataphylls with concave cells.
    Leaves: basal sheaths golden brown to dark-brown;
    blades green, eceeding culms, 0.8–4.8 mm wide, herbaceous, margins green, scabrous.
    Lateral spikes 1–5, basal, on spreading to nodding peduncles.
    Terminal spikes with staminate portion 3–13flowered, (4.2–) 5.814.5 × 0.40.8 mm;
    Pistillate scales green, margins connate, hyaline, white, occasionally tinged reddish-brown;
    proximal scales with margins 1.4–3 mm, apex long-acuminate;
    distal scales with margins 0.4–0.8 mm wide, apex acuminate, awnless.
    Staminate scales ovate, 1.1–1.8 (–2.1) × 1.2–1.5 mm, 0.12–0.25 (–0.75) length of staminate portion of terminal spike, margins hyaline, white, often with reddish-brown subapical band, apex truncate or broadly obtuse.
    Anthers 0.6–1.6 mm.
    Perigynia green to bronze, globose to ellipsoid, 4.4–7.2 × 1.9–2.4 mm, tightly enveloping achenes, apex abruptly tapering;
    beak 1.6–3.8 mm, scabrous.
    Stigmas filiform, flexuous, strongly papillose.
    Achenes dark-brown, globose to ellipsoid, 2–2.6 × 1.7–2.4 mm. 2n = 66, 70.