Eleocharis fallax Weatherby (Q3291)

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Eleocharis fallax is a taxon with the rank species within the series Eleocharis ser. Eleocharis
Language Label Description Also known as
English
Eleocharis fallax Weatherby
Eleocharis fallax is a taxon with the rank species within the series Eleocharis ser. Eleocharis

    Statements

    taxon/id/Eleocharis fallax Weatherby
    0 references
    Eleocharis fallax Weatherby
    Eleocharis fallax
    Weatherby
    FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
    accepted
    éléocharide trompeuse (French)
    creeping spikerush (English)
    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
    coastal
    fresh to brackish pond
    lakeshores
    Plants perennial, mat-forming;
    rhizomes evident, long, 1–2 mm thick, firm, cortex persistent, longer internodes 5–10 (–20) mm, scales sometimes fugaceous, 5–7 mm, papery (to membranous), sometimes fibrous.
    Culms terete, often with to 12 blunt ridges when dry, 30–75 cm × 0.5–1.5 mm, firm, internally spongy.
    Leaves: distal leaf-sheaths persistent, not splitting, proximally dark red, distally stramineous or green, papery to membranous, apex dark redbrown, obtuse, not callose, tooth rarely present on some culms, 0.2 mm.
    Spikelets ovoid or subspheric, 5–12 × 2–3 (–4) mm, apex acute to obtuse;
    proximal scale amplexicaulous, entire;
    floral scales deciduous, often spreading in fruit, 10–35, 3 per mm of rachilla, redbrown to blackish brown, midrib regions sometimes green, ovate, 2.5–3 × 1.7 mm, apex entire, obtuse to acute, often carinate in distal part of spikelet.
    Flowers: perianth bristles 1–5, brown, stout, very unequal, rudimentary to equaling achene;
    styles 3-fid or some 2-fid.
    Achenes not persistent, dark yellow or medium brown, obovoid to obpyriform, compressed trigonous, or some thickly biconvex, angles evident, 1.1–1.5 × 0.95–1.25 mm, apex rounded, neck very short (to absent), finely rugulose at 10–20X, 20 or more horizontal ridges in vertical series, finely cancellate at 20–30X.
    Tubercles whitish to brown, pyramidal, not depressed, as high as wide, 0.3–0.5 × 0.4–0.6 mm. 2n = 42.