Carex davisii Schweinitz & Torrey (Q234)

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Carex davisii is a taxon with the rank species within the section Carex sect. Hymenochlaenae
Language Label Description Also known as
English
Carex davisii Schweinitz & Torrey
Carex davisii is a taxon with the rank species within the section Carex sect. Hymenochlaenae

    Statements

    taxon/id/Carex davisii Schweinitz & Torrey
    0 references
    Carex davisii Schweinitz & Torrey
    Carex davisii
    Schweinitz & Torrey
    FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
    accepted
    carex de Davis (French)
    Davis' sedge (English)
    awned graceful sedge (English)
    Davis’ 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
    FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York. http://www.efloras.org/volume_page.aspx?volume_id=1023&flora_id=1
    floodplain forests
    rich deciduous forests
    forest margins
    streams
    ditches
    wooded ravine slopes
    meadows
    fields
    thickets
    calcareous soils
    Plants densely cespitose.
    Culms dark maroon at base;
    flowering-stems 30–100 cm, as long as leaves at maturity or a little shorter, 1.5–3 mm thick, glabrous or pubescent on angles.
    Leaves: basal sheaths maroon, bladeless, sheaths pubescent or rarely glabrous;
    blades flat, 3–8 mm wide, usually pubescent on abaxial surface at least near sheath, minutely scabrous on margins.
    Inflorescences: peduncles of proximal spikes slender, 10–25 mm, pubescent;
    peduncle of terminal spike 10–30 mm, pubescent;
    proximal bracts equaling or often exceeding inflorescences;
    sheaths 15–45 mm;
    blades 2–6 mm wide.
    Lateral spikes 2–4, 1 per node, well separated or distal 2 usually overlapping terminal spike, mostly erect when young but at least proximal spikes nodding at maturity, pistillate with 10–40 perigynia attached 1 mm apart distally and to 4 mm apart proximally, cylindric, 10–50 × 3.5–6 mm.
    Terminal spike gynecandrous, sessile or pedunculate, 15–35 × 2–6 mm.
    Pistillate scales pale hyaline with broad green midrib, elliptic or ovatelanceolate, body shorter than mature perigynia but extending into pubescent green awn 2.5–3 mm, often short-ciliate near apex.
    Perigynia green to olive-green, often red dotted, 2-ribbed with 9–12 almost equally prominent, evenly spaced veins extending from base to apex, slightly inflated around achene, ellipsoid-ovoid, 4.5–6 × 2–2.5 mm, membranous, base rounded, apex narrowing abruptly to minute beak, glabrous;
    beak bidentate, less than 0.5 mm.
    Achenes distinctly stipitate, 2.2–2.7 × 1–1.2 mm, stipe 1 mm.