Difference between revisions of "Scirpus expansus Fernald (Q3373)"
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Latest revision as of 12:37, 24 June 2022
Scirpus expansus is a taxon with the rank species within the genus Scirpus
| Language | Label | Description | Also known as |
|---|---|---|---|
| English |
Scirpus expansus Fernald
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Scirpus expansus is a taxon with the rank species within the genus Scirpus
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Statements
taxon/id/Scirpus expansus Fernald
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Scirpus expansus Fernald
Scirpus expansus
Fernald
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-NS
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CA-NS
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CA-ON
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US-AL
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US-CT
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US-DE
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US-DC
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US-GA
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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-NH
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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-PA
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US-RI
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US-SC
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US-TN
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US-VT
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US-VA
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US-WV
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rhizomes reddish, long, with conspicuous nodes and internodes.
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Culms: fertile ones upright or nearly so;
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Leaves 5–8 per culm;
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sheaths of proximal leaves red;
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proximal sheaths and blades with septa many, conspicuous;
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blades 30–68 cm × 9–23 mm.
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Inflorescences terminal;
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rays divaricate or occasionally ascending, proximal branches scabrellous (rarely smooth), distal branches scabrous, rays without axillary bulblets;
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bases of involucral-bracts green or reddish, not glutinous.
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Spikelets in dense clusters of (1–) 3–13 (–24), (largest cluster with 7 or more), spikelets sessile, ovoid or narrowly ovoid, 2–6 × 1–3 mm;
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scales black with green midribs, ovate or broadly rounded-ovate to nearly triangular or broadly triangular, 1–2.2 mm, apex rounded to mucronate, mucro (if present) to 0.2 mm.
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Flowers: perianth bristles brittle-based, readily detached from achene, 6, stout, straight or curved, shorter than to 1.5 times as long as achene, with retrorse, thick-walled, sharp-pointed teeth densely arranged almost to base, at maturity projecting beyond scales;
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Achenes pale-brown, oblongelliptic to broadly elliptic or obovate in outline, planoconvex or sometimes plumply trigonous, 1–1.6 × (0.6–) 0.8–1 mm. 2n = 64.
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broadly rounded-ovate
nearly triangular or broadly triangular
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oblongelliptic
broadly elliptic or obovate
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