Difference between revisions of "Cyperus houghtonii Torrey (Q3248)"
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Latest revision as of 12:37, 24 June 2022
Cyperus houghtonii is a taxon with the rank species within the subgenus Cyperus subg. Juncellus
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Cyperus houghtonii Torrey
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Cyperus houghtonii is a taxon with the rank species within the subgenus Cyperus subg. Juncellus
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taxon/id/Cyperus houghtonii Torrey
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Cyperus houghtonii Torrey
Cyperus houghtonii
Torrey
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-MB
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Manitoba Checklist, 2002
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-MB
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CA-ON
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CA-QC
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US-IL
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US-IN
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US-ME
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US-MD
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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-NY
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US-OH
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US-PA
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US-VT
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US-VA
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US-WV
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US-WI
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Herbs, perennial, cespitose, bases cormose, rhizomatous.
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Culms trigonous, 5–50 cm × 0.5–1.5 mm, glabrous.
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Leaves V-shaped, 12–30 cm × 1–6 mm.
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Inflorescences: spikes ± globose to broadly ovoid, 8–20 mm wide;
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rachis 2–5 mm, glabrous;
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bracts 3–8, weakly ascending, flat, 3–20 cm × 1–3.5 mm;
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Spikelets 3–18, compressed, ovoid to oblong-lanceoloid, 4–15 × 2.6–3.4 mm;
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floral scales deciduous, 3–18, laterally stramineous to reddish-brown, laterally 3–4-ribbed, broadly ovate, 1.8–2.5 × 1.3–1.6 mm, apex with mucro 0.1–0.2 mm.
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Flowers: anthers 0.5–0.7 mm;
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styles 0.4–0.6 mm;
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stigmas 1–1.5 mm.
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Achenes dark-brown, sessile, broadly ellipsoid, 1.5–2 × 1–1.5 mm, apex obtuse, apiculate, surface glabrous, puncticulate, or papillose.
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2n = 168, 170, 172.
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laterally stramineous
reddish-brown
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