Carex nigromarginata Schweinitz (Q65)

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Carex nigromarginata is a taxon with the rank species within the section Carex sect. Acrocystis
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English
Carex nigromarginata Schweinitz
Carex nigromarginata is a taxon with the rank species within the section Carex sect. Acrocystis

    Statements

    taxon/id/Carex nigromarginata Schweinitz
    0 references
    Carex nigromarginata Schweinitz
    Carex nigromarginata
    Schweinitz
    FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
    accepted
    carex à marge noire (French)
    black-edged 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/
    1 reference
    Zinck, M. 1998. Roland's Flora of Nova Scotia. Nimber Publishing & Nova Scotia Museum. Halifax, N. S. 2 vols. 1297 pp.
    acidic soils
    dry woods
    thickets
    clearings
    partial shade
    mixed hardwood-pine forests
    full sun
    open roadsides
    clearing edges
    often adjacent to streams
    Plants densely cespitose;
    rhizomes ascending to erect, reddish-brown, 0–10 mm, stout.
    Culms 8–27 cm, scabrous distally;
    bases (remnants of old leaves) strongly fibrous.
    Leaf-blades green, greatly exceeding culms, 1.4–4 mm wide, herbaceous, papillose to scabrous abaxially, papillose to scabrous adaxially.
    Inflorescences with both staminate and pistillate spikes;
    peduncles of staminate spikes 0.3–0.8 mm;
    proximal cauline bracts leaflike, usually shorter than inflorescences.
    Spikes: proximal pistillate spikes 2–3 (basal spikes 0);
    cauline spikes overlapping, proximal 2 separated by less than 7 mm, with 6–15 perigynia;
    staminate spikes 5.3–10 × 1.1–2.3 mm.
    Scales: pistillate scales pale to, usually, dark reddish-brown to purplish brown, with similarly colored or narrow white margins, ovate to lanceolate, 2.9–3.7 × 1.2–2 mm, equaling or exceeding perigynia, apex acute to acuminate or cuspidate;
    staminate scales ovate, 3–4.3 × 1–1.8 mm, apex obtuse to acute or acuminate.
    Anthers 1.4–2.6 mm.
    Perigynia pale green, veinless, ellipsoid, 2.8–3.6 × 1–1.3 mm, longer than wide;
    beak straight, pale green, 0.7–1 mm, weakly ciliate-serrulate, apical teeth 0.1–0.4 mm.
    Achenes brown, ellipsoid, obtusely trigonous in cross-section, 1.4–2 × 0.9–1.2 mm. 2n = 36.