Schoenoplectus acutus (Muhlenberg ex Bigelow) Á. Löve & D. Löve (Q3418)
Schoenoplectus acutus is a taxon with the rank species within the section Schoenoplectus sect. Schoenoplectus
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| English |
Schoenoplectus acutus (Muhlenberg ex Bigelow) Á. Löve & D. Löve
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Schoenoplectus acutus is a taxon with the rank species within the section Schoenoplectus sect. Schoenoplectus
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Statements
taxon/id/Schoenoplectus acutus (Muhlenberg ex Bigelow) Á. Löve & D. Löve
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Schoenoplectus acutus (Muhlenberg ex Bigelow) Á. Löve & D. Löve
Schoenoplectus acutus
(Muhlenberg ex Bigelow) Á. Löve & D. Löve
FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
accepted
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(Muhlenberg ex Bigelow) Á. Löve & D. Löve
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CA-AB
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CA-BC
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CA-MB
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CA-NB
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CA-NS
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CA-NT
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CA-ON
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CA-PE
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CA-QC
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CA-SK
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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-CT
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US-DE
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US-ID
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US-IL
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US-IN
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US-IA
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US-KS
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US-KY
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US-ME
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US-MA
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US-MD
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US-MI
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US-MN
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US-MO
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US-MT
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US-NC
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US-ND
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US-NH
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US-NJ
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US-NM
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US-NY
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US-NE
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US-NV
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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-RI
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US-SD
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US-TX
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US-UT
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US-VA
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US-VT
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US-WA
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US-WI
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US-WY
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Rhizomes 5–15 mm diam.
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Culms cylindric, 1–4 m × 2–10 mm.
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Leaves 3–4, all basal;
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sheaths often dark reddish proximally, front membranous-translucent and splitting, orifice adaxially deeply V-shaped;
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blades 1–2, C-shaped to dorsiventrally flat in cross-section, usually much shorter than sheath, distal blade 8–120 × 3–7 mm, margins often scabridulous.
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Inflorescences 2 (–3) times branched, open or compact, branches 6 (–18) cm;
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proximal bract usually erect, thickly C-shaped in cross-section, 1–9 cm, margins sometimes scabridulous.
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Spikelets 3–190, solitary or in clusters of 2–8, never all solitary;
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scales reddish to orangebrown to straw-colored, often variable on same scale, usually wholly or partly straw-colored and prominently lineolate-spotted at 10X, scale or midrib often green when young, ovate, 3–4 × 2–3 mm, sparsely to often densely reddish or straw-colored spinulose-papillose distally or on most of surface, margins ciliate, hairs long, contorted, flanks veinless, apex acute to obtuse, notch 0.3–0.5 mm deep, awn on at least some scales in spikelet usually strongly contorted, 0.5–2 mm (often broken off).
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Flowers: perianth members (4–) 6 (–8), brown, bristlelike, equaling achene body or sometimes much shorter, rarely rudimentary, spinulose;
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styles 2 (–3) -fid.
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Achenes dark graybrown, planoconvex or rarely weakly trigonous, obovoid, (1.5–) 2–3 1.2–1.7 mm;
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c-shaped
dorsiventrally flat
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2(-3) times branched open or compact branches
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2(-3) times branched open or compact branches
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2(-3) times branched open or compact branches
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straw-colored and prominently lineolate-spotted
usually wholly; wholly; partly
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sparsely
often densely reddish or straw-colored
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spinulose-papillose
sparsely to often densely; distally
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