Eleocharis macrostachya Britton in J. K. Small (Q3293)
Eleocharis macrostachya is a taxon with the rank species within the series Eleocharis ser. Eleocharis
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Eleocharis macrostachya Britton in J. K. Small
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Eleocharis macrostachya is a taxon with the rank species within the series Eleocharis ser. Eleocharis
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Statements
taxon/id/Eleocharis macrostachya Britton
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Eleocharis macrostachya Britton
Eleocharis macrostachya
Britton
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-BC
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Klinkenberg, B. (ed.). 2010+. E-Flora BC: Electronic Atlas of the Plants of British Columbia. Lab. for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver, B.C. http://www.eflora.bc.ca http://www.eflora.bc.ca/
CA-AB
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Packer, J.G. & A.J. Gould. 2017.Vascular Plants of Alberta. Part 1: Ferns, Fern Allies, Gymnospermes, and Monocots. University of Calgary Press, Calgary.
CA-MB
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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
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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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
CA-YT
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Bennett, B., P.M. Catling, W.J. Cody & G.W. Argus. 2010. New records of vascular plants in the Yukon Territory VIII. Canadian Field Naturalist 124 (1): 1-27. http://canadianfieldnaturalist.ca/index.php/cfn/article/view/1025
CA-NT
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Herbarium, University of Michigan (MICH). Specimen. http://herbarium.lsa.umich.edu/
CA-AB
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CA-BC
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CA-MB
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CA-ON
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CA-QC
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CA-YT
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US-AK
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US-AZ
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US-AR
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US-CA
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US-CO
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US-ID
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US-IL
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US-IA
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US-KS
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US-LA
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US-MN
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US-MS
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US-MO
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US-MT
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US-NE
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US-NV
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US-NM
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US-ND
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US-OK
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US-OR
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US-SD
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US-TX
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US-UT
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US-WA
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US-WI
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US-WY
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10–2300 m
10 meter
2,300 meter
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Plants perennial, mat-forming;
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rhizomes evident, long, 1–2 mm thick, firm, cortex persistent, longer internodes 10–55 mm, scales often fugaceous, 5–10 mm, membranous, not fibrous.
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Culms terete to markedly compressed, to 3 times wider than thick, often with to 25 blunt ridges when dry, 10–100 cm × 0.5–2.5 (–3.5) mm, firm (to soft), internally spongy.
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Leaves: distal leaf-sheaths persistent, rarely splitting abaxially, proximally mostly red, distally green (or red), papery (to membranous), apex truncate to obtuse, tooth sometimes present on some or all culms, 0.1–0.6 (–1) mm.
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Spikelets narrowly lanceoloid to ovoid, 5–40 × 2–5 mm, acute, rarely obtuse;
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proximal scale clasping (2/3–) 3/4 or more of culm to amplexicaulous, usually variably in same plant;
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subproximal scale empty or with flower, usually empty in some spikelets and with flower in other spikelets in same plant;
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floral scales deciduous, often spreading in fruit, 30–80, 3–5 per mm of rachilla, medium brown, sometimes redbrown or dark chestnut-brown, midrib regions often stramineous to green, ovate to narrowly lanceolate, 2.5–5.5 × 1.5–2.5 mm, entire, mostly carinate in distal part of spikelet.
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Flowers: perianth bristles 4 (–5), sometimes rudimentary or absent, brown, slender to stout, much shorter than achene to equaling tubercle;
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anthers dark yellow to orangebrown, 1.3–2.7 mm;
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Achenes not persistent, yellow maturing to yellowbrown or dark-brown, ellipsoid, obovoid, or obpyriform, biconvex to planoconvex, angles obscure, 1.1–1.9 × 0.8–1.5 mm, apex rounded, neck absent or short, smooth at 30X, or finely rugulose at 10–20X with 20 or more horizontal ridges in a vertical series.
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Tubercles brown to whitish, pyramidal, as high as or sometimes much higher than wide, 0.35–0.7 × 0.25–0.7 mm. 2n = 18, 19, 38.
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0-3 times wider than thick
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obpyriform biconvex
planoconvex
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obpyriform biconvex
planoconvex
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obpyriform biconvex
planoconvex
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