Eleocharis robbinsii Oakes (Q3327)
Eleocharis robbinsii is a taxon with the rank species within the subgenus Eleocharis subg. Limnochloa
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Eleocharis robbinsii Oakes
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Eleocharis robbinsii is a taxon with the rank species within the subgenus Eleocharis subg. Limnochloa
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Statements
taxon/id/Eleocharis robbinsii Oakes
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Eleocharis robbinsii Oakes
Eleocharis robbinsii
Oakes
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-QC
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Marie-Victorin, Fr. 1995. Flore laurentienne. 3e éd. Mise à jour et annotée par L. Brouillet, S.G. Hay, I. Goulet, M. Blondeau, J. Cayouette et J. Labrecque. Gaétan Morin éditeur. 1093 pp.
CA-NB
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Hinds, H.R. 2000. Flora of New Brunswick : a manual for the identification of the vascular plants of New Brunswick. 2nd edition. Biology Department, University of New Brunswick, Fredericton. 699 pp.
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-NB
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CA-NS
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CA-ON
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CA-QC
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US-AL
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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-ME
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US-MA
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US-MI
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US-MN
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US-NH
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US-NJ
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US-NC
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US-OH
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US-SC
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US-VA
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US-WI
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10–500 m
10 meter
500 meter
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rhizomes (0.5–) 1–2 mm thick, longer internodes 2–3 cm, scales 5–7 mm;
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tubers sometimes present, apical, ovoid, 4–8 × 3–4 mm.
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spikelet-bearing culms 16–70 cm × 0.7–0.9 mm;
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when submersed plants often forming numerous, filiform, flaccid culms without spikelets, sometimes with whorls of slender branches, 0.1–0.3 mm wide;
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soft, sometimes septate-nodulose when aquatic, internally spongy, transverse septa incomplete.
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Leaves: distal leaf-sheaths persistent or decaying, membranous, apex obtuse to acuminate.
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Spikelets sometimes proliferous (when submerged), 9–33 × 1.5–3 mm;
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proximal scale with a flower, amplexicaulous, (5–) 6–9.8 mm;
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floral scales 4–18, 0.5–1 per mm of rachilla, stramineous to pale-brown, often minutely dotted reddish, without or rarely with darker submarginal band, narrowly ovate to lanceolate, 5–7.8 × 2–3 mm, thickly papery, membranous toward margins, apex narrowly rounded to acute.
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Flowers: perianth bristles 6–7, stramineous to reddish-brown, proximally slightly flattened, subequal to equal, much exceeding to rarely shorter than achene, 3–5 mm, retrorsely spinulose;
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anthers yellow to reddish, 1.6–3.2 mm;
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Achenes stramineous or medium brown, biconvex or compressed trigonous, narrowly obpyriform, 1.9–2.6 × 1–1.4 mm, adaxial face with 15–22 rows of rectangular, transversely elongated or nearly isodiametric cells, clearly sculptured at 10–15X, apex usually conspicuously constricted to short neck 0.4–0.7 mm wide, usually wider at tubercle base.
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Tubercles stramineous to medium brown, high-pyramidal, 0.5–1.1 × 0.3–0.7 mm.
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septate-nodulose
when aquatic
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dotted reddish
often minutely; minutely
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usually conspicuously constricted
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