Eleocharis tuberculosa (Michaux) Roemer & Schultes in J. J. Roemer et al. (Q3306)
Eleocharis tuberculosa is a taxon with the rank species within the series Eleocharis ser. Tenuissimae
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| English |
Eleocharis tuberculosa (Michaux) Roemer & Schultes in J. J. Roemer et al.
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Eleocharis tuberculosa is a taxon with the rank species within the series Eleocharis ser. Tenuissimae
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Statements
taxon/id/Eleocharis tuberculosa (Michaux) Roemer & Schultes
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Eleocharis tuberculosa (Michaux) Roemer & Schultes
Eleocharis tuberculosa
(Michaux) Roemer & Schultes
FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
accepted
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CA-NS
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Zinck, M. 1998. Roland's Flora of Nova Scotia. Nimber Publishing & Nova Scotia Museum. Halifax, N. S. 2 vols. 1297 pp.
CA-NS
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US-AL
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US-AR
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US-FL
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US-GA
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US-LA
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US-MA
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US-MS
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US-NJ
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US-NC
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US-SC
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US-TX
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Plants perennial, forming dense clumps, not stoloniferous.
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Rhizomes present or not, caudexlike, ascending, 1 mm thick;
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internodes and scales hidden by crowded culms, not evident.
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Culms elliptic or sometimes circular, with several rounded ridges and sulcate when dry, 15–75 cm × 0.3 (–1.5) mm, firm, minutely granular at 10X.
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Leaves: distal leaf-sheaths persistent;
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stramineous to green, often minutely red-spotted, papery to membranous, apex subacute to narrowly acute, often with toothlike callus.
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Spikelets: basal spikelets absent;
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never proliferous, ovoid, terete, 5–15 × 2.5–4 mm, apex acute;
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proximal scale empty, deciduous, clasping 1/2 of culm, similar to floral scales;
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subproximal scale often empty;
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floral scales spiraled, 10–30, 5–6 per mm of rachilla, pale orangebrown, midribs green, broadly ovate, 2.5–4 × 1.5–2.5 mm, central area and often flanks papery to cartilaginous (or membranous), midrib evident, apex broadly rounded to obtuse.
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Flowers: perianth bristles 5–6, bright brown, stout, slightly shorter than to equaling tubercle;
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spinules rarely absent, dense, variably from divaricate to antrorse, very short, and blunt to acute, to often much longer and retrorse, sharply acute;
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anthers 0.5–1 mm;
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Achenes medium brown, obovoid to obpyriform, compressed (often obscurely) trigonous, angles evident, 0.9–1.7 × 0.8–2 mm;
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apex often constricted proximal to tubercle, very coarsely cancellate at 10X, each face with 8–10 longitudinal rows of large depressions.
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Tubercles bone-white to pale orangebrown, often red-spotted, subpyramidal, cross-section planoconvex, 0.9–1.7 (–2.4) × 0.7–1.2–2 (–2.2) mm, at least as high and wide as achene, spongy, apex rounded, often with an abaxial acute projection.
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from divaricate to antrorse; very
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