Carex amphibola Steudel (Q214)

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Carex amphibola is a taxon with the rank species within the section Carex sect. Griseae
Language Label Description Also known as
English
Carex amphibola Steudel
Carex amphibola is a taxon with the rank species within the section Carex sect. Griseae

    Statements

    taxon/id/Carex amphibola Steudel
    0 references
    Carex amphibola Steudel
    Carex amphibola
    Steudel
    FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
    accepted
    carex amphibole (French)
    eastern narrow-leaved sedge (English)
    amphibious sedge (English)
    gray 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/
    forests
    acidic loams
    flood plains
    slopes
    streams
    uplands
    rhizo1me internodes 1.2–2 mm thick.
    Culms dark purple-red to 0.3–2.4 (–7.3) cm high or very rarely brown at base, 15–80 cm.
    Leaves: sheaths glabrous;
    blades green, widest blades (3.7–) 4.4–7 mm wide, smooth abaxially.
    Inflorescences 0.48–0.93 of culm height;
    peduncles of lateral spikes glabrous or barely scaberulous;
    peduncles of terminal spikes 1.6–21 (–37) mm, usually barely exceeding lateral spikes;
    proximal bract sheaths loose, glabrous abaxially, sheath front slightly concave to slightly convex, elongated 0.6–2.2 (–5) mm beyond apex;
    ligules (1.8–) 3.4–7.8 (–12.9) mm;
    Spike (3–) 4–5, distal 2–4 overlapping;
    lateral spikes pistillate, with 3–18 perigynia, 5–26 × 4.6–9.8 mm, ratio of spike length (in mm) to flower number = 1.3–1.9;
    terminal spikes 7–34 × 1.1–2.7 mm.
    Pistillate scales 3.7–8 × 1.2–2.4 mm, margins whitish and usually with redbrown speckles, entire, apex with awn 1.1–6 mm.
    Staminate scales 3.6–4.9 × 1.1–1.9 mm.
    Anthers 2–2.8 mm.
    Perigynia spirally imbricate, 52–64-veined, unwrinkled to wrinkled, oblong-lanceoloid to narrowly oblong-ovoid, obtusely triangular in cross-section, 4.2–5 (–5.2) × 1.5–1.9 (–2.2) mm, (2.2–) 2.5–3.1 times as long as wide, lustrous, base very gradually tapered, apex gradually tapered;
    beak absent or straight, 0–0.2 mm.
    Achenes broadly obovoid to oblong-obovoid, widest at 0.55–0.67 (–0.7) of body length, (2.6–) 2.8–3.4 × (1.3–) 1.5–1.7 (–1.8) mm, loosely enveloped by perigynia;
    stipe straight, (0.3–) 0.4–0.6 mm;
    beak straight, 0.3–0.6 mm.