Eleocharis quadrangulata (Michaux) Roemer & Schultes in J. J. Roemer et al. (Q3326)
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Eleocharis quadrangulata is a taxon with the rank species within the subgenus Eleocharis subg. Limnochloa
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Eleocharis quadrangulata (Michaux) Roemer & Schultes in J. J. Roemer et al.
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Eleocharis quadrangulata is a taxon with the rank species within the subgenus Eleocharis subg. Limnochloa
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Statements
taxon/id/Eleocharis quadrangulata (Michaux) Roemer & Schultes
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Eleocharis quadrangulata (Michaux) Roemer & Schultes
Eleocharis quadrangulata
(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-ON
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Newmaster, S.G. & S. Ragupathy. 2005. Flora Ontario - Integrated Botanical Information System (FOIBIS), Phase I. University of Guelph, Canada. http://www.uoguelph.ca/foibis http://www.uoguelph.ca/foibis/
CA-PE
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CA-NS
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CA-ON
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US-AR
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US-CA
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US-CT
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US-DE
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US-FL
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US-GA
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US-IL
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US-IN
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US-KY
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US-LA
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US-MA
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US-MI
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US-MS
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US-MO
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US-NJ
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US-NY
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US-NC
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US-OH
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US-OK
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US-OR
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US-PA
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US-SC
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US-TX
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US-VA
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US-WV
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US-WI
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10–600 m
10 meter
600 meter
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rhizomes 1.5–4 mm thick, soft to hard, longer internodes 3–8 cm, scales 5–10 mm, tubers absent.
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Culms acutely quadrangular, (30–) 45–105 cm × (1–) 2–5.4 mm, soft to firm, internally spongy, transverse septa incomplete;
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plants never forming filiform, flaccid culms.
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Leaves: distal leaf-sheaths persistent, membranous, apex narrowly acute to acuminate, sometimes prolonged into a bladelike portion to 8 cm.
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Spikelets not proliferous, (15–) 20–76 × 3–5 (–6) mm;
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proximal scale empty, amplexicaulous, (1–) 2.2–5.4 mm;
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floral scales (28–) 45–135, 2–3 per mm of rachilla, stramineous to pale-brown, usually with pale to dark-brown submarginal band, midrib region sometimes greenish, broadly obovate to ovate, (4–) 4.5–6.2 × 2.8–5 mm, subcartilaginous, apex rounded to obtuse.
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Flowers: perianth bristles 6–7, whitish to brown, slender, often markedly unequal, shorter than achene or some equalling tubercle, sparsely retrorsely spinulose to smooth;
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anthers stramineous to redbrown, 2.3–2.9 mm;
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styles 3-fid, sometimes 2-fid.
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Achenes yellow or pale green to brown or purplish, biconvex, obovoid to obpyriform, 1.8–3 × 1.3–2 mm, almost smooth to markedly sculptured at 10–15X, each face with 19–38 rows of almost linear, transversely elongated cells, which sometimes isodiametric at achene base, apex often constricted to neck 0.3–0.4 mm wide.
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Tubercles dark-brown or whitish, deltoid to high-pyramidal or lanceoloid, 0.7–1.5 × 0.4–1 mm, often spongy.
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sparsely retrorsely spinulose
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pale green
brown or purplish
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deltoid
high-pyramidal or lanceoloid
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