Eleocharis subg. Zinserlingia T. V. Egorova (Q3331)

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Eleocharis subg. Zinserlingia is a taxon with the rank subgenus within the genus Eleocharis
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English
Eleocharis subg. Zinserlingia T. V. Egorova
Eleocharis subg. Zinserlingia is a taxon with the rank subgenus within the genus Eleocharis

    Statements

    taxon/id/Eleocharis subg. Zinserlingia T.V. Egorova
    0 references
    Eleocharis subg. Zinserlingia T.V. Egorova
    Eleocharis subg. Zinserlingia
    T.V. Egorova
    FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
    accepted
    Eleocharis subg. Zinserlingia
    Temperate and boreal North America
    South America (Argentina)
    South America (Chile)
    Eurasia
    Plants perennial, never with spikelets proliferating or culms rooting at tips.
    Rhizomes present, creeping.
    Bulbs (resting buds) often present, terminating short rhizomes or among culm bases.
    Culms 5–40 cm × 0.3–1.2 (–2.5) mm, spongy, transverse septa incomplete.
    Spikelets ovoid or oblong, terete, usually much wider than their culms, 3–10 mm;
    rachilla with several proximal internodes shorter and thicker than internodes in middle of spikelet;
    proximal scale subtending a flower or empty;
    floral scales ca. 4–12 per spikelet, spiraled, 2.5–6 mm, with 1 vein, membranous.
    Styles 3-fid, or 3-fid and 2-fid.
    Achenes trigonous, or trigonous and biconvex, usually distally narrowed into a distinct beak, 1.5–2.7 mm, smooth or finely longitudinally ridged, the outer anticlinal epidermal-cell walls often forming a fine whitish reticulum.
    Tubercles often merging with achene summit in form, texture, and color, not dorsoventrally greatly compressed.