Bolboschoenus robustus (Pursh) Soják (Q3390)

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Bolboschoenus robustus is a taxon with the rank species within the genus Bolboschoenus
Language Label Description Also known as
English
Bolboschoenus robustus (Pursh) Soják
Bolboschoenus robustus is a taxon with the rank species within the genus Bolboschoenus

    Statements

    taxon/id/Bolboschoenus robustus (Pursh) Soják
    0 references
    Bolboschoenus robustus (Pursh) Soják
    Bolboschoenus robustus
    (Pursh) Soják
    FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
    accepted
    Bolboschoenus robustus
    scirpe robuste (French)
    sturdy bulrush (English)
    seacoast bulrush (English)
    Seacoast bulrush (English)
    1 reference
    Herbier Marie-Victorin (MT). Université de Montréal, Montréal, QC. Specimen. http://www.biodiversite.umontreal.ca/herbier-marie-victorin?lang=en
    Mexico
    South America
    brackish to saline coastal ( ) shores
    brackish to saline marshes
    0(–100) m
    Culms 50–150 cm × 4–8 mm.
    Leaves: sheaths reaching beyond middle of culm, fronts usually convex, papery at mouth, veins reaching margin, or occasionally membranous with veins diverging proximal to apex leaving triangular, veinless area;
    widest blade 4–12 mm wide.
    Inflorescences simply branched with 1 or not more than 1/2 of spikelets solitary or in clusters of 2 (–3) on 1–7 rays, rays not exceeding 7 cm;
    involucral-bracts that surpass inflorescence 2–4, widest bract 2–7 mm wide.
    Spikelets (1–) 5–25, broadly ovoid to rarely lanceoloid, 10–30 × 6–10 mm, base usually truncate;
    scales usually tightly imbricate, medium to dark orangebrown, lineolate-spotted at 15X, usually 6–9 × 3–4 mm, papery and nearly opaque, rarely membranous, apex 2-fid, 1 mm deep, awn very stout, 2–3 × 0.5 mm at base.
    Flowers: perianth bristles not persistent on shed achene or 1–2 weakly attached to shed achene, dark redbrown, 1/2 achene length;
    anthers brownish orange, 1.5–2.5 mm;
    styles (2–) 3-fid.
    Achenes dark to medium brown, obovoid, compressedtrigonous with broadly rounded abaxial angle or sometimes biconvex, 2.7–3.5 × 1.8–2.8 mm, apex truncate to broadly rounded, beak 0.1–0.3 mm, surface glossy, exocarp cells evident at 10–20X;
    in achene cross-section exocarp 2 times thicker than mesocarp and its cells greatly enlarged, 3 times or more deeper than wide;
    achene specific gravity much less than water.