Cyperus esculentus Linnaeus (Q3253)

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Cyperus esculentus is a taxon with the rank species within the subgenus Cyperus subg. Juncellus
Language Label Description Also known as
English
Cyperus esculentus Linnaeus
Cyperus esculentus is a taxon with the rank species within the subgenus Cyperus subg. Juncellus

    Statements

    taxon/id/Cyperus esculentus Linnaeus
    0 references
    Cyperus esculentus Linnaeus
    Cyperus esculentus
    Linnaeus
    FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
    accepted
    souchet comestible (French)
    perennial yellow flatsedge (English)
    yellow nutsedge (English)
    yellow nutgrass (English)
    nearly worldwide
    Herbs, perennial, stoloniferous;
    stolons soft, spongy, flexible when dried, 2–8 (–15) cm, bearing tubers (3–) 6–11 mm diam.
    Culms trigonous, 15–60 (–100) cm × 0.6–3.4 mm, glabrous.
    Leaves 3–7, flat to V-shaped or flanged V-shaped, (6–) 20–40 (–80) cm × 2–4 (–6.5) mm.
    Inflorescences: spikes broadly ellipsoid to ovoid or hemispheric, (12–) 18–30 × (12–) 18–35 mm;
    rays 4–10, (0.3–) 2–12 cm;
    bracts (3–) 4–5 (–7), ± horizontal to ascending at 45 (–75) °, V-shaped to flanged V-shaped, (1.5–) 5–30 cm × 0.5–4 mm;
    rachilla persistent, wings hyaline, 0.3–0.5 mm wide.
    Spikelets (3–) 10–20 (–28), divaricate or ascending, yellowish-brown to dark-brown, linear to linear-lanceoloid, compressed-quadrangular, (5–) 10–20 (–55) × (1.2–) 1.4–2 (–3) mm;
    floral scales persistent, 6–34, spreading or appressed, ovatelanceolate, laterally 7–9-ribbed, laterally yellowish-brown to dark-brown medially brownish, reddish, or greenish, ovate, or ovate-deltate, medially 3-ribbed, 1.8–2.7 (–3.4) × (1–) 1.5–1.8 (–2.4) mm, apex acute or subacute.
    Flowers: anthers (1–) 1.2–1.5 (–2.1) mm;
    styles (0.7–) 1–1.2 (–2.2) mm;
    stigmas (1.2–) 1.8–2.3 (–4) mm.
    Achenes (seldom maturing) brown, sessile, ellipsoid, (1.1–) 1.3–1.5 (–1.6) × 0.3–0.6 (–0.8) mm, apex obtuse, surfaces puncticulate.