Carex laxa Wahlenberg (Q377)
Carex laxa is a taxon with the rank species within the section Carex sect. Paniceae
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Carex laxa Wahlenberg
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Carex laxa is a taxon with the rank species within the section Carex sect. Paniceae
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Statements
taxon/id/Carex laxa Wahlenberg
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Carex laxa Wahlenberg
Carex laxa
Wahlenberg
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-NT
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Porsild, A.E. & W.J. Cody. 1980. Vascular Plants of the Continental Northwest Territories, Canada. National Museum of Natural Sciences, Ottawa, Ont. 667 pp.
CA-YT
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Cody, W.J. 2000. Flora of the Yukon Territory. 2nd ed. National Research Press, Ottawa. 669 pp.
CA-YT
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US-AK
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900–1100 m
900 meter
1,100 meter
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Plants colonial, long-rhizomatous.
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Culms 15–40 cm, smooth distally.
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Leaves: proximal sheaths greenish to pale brownish, ± spongy and septate-nodulose;
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ligules 1.4–3.5 mm, longer than wide;
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blades green, ± flat, 2–25 cm × 1–2.5 (–3.5) mm, those of fertile and vegetative shoots similar.
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Inflorescences 4–12 (–20) cm, 1.25–2.75 times longer than proximal bract;
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proximal bracts 1.8–7 (–13) cm, sheaths 0.9–2.2 (–3.5) cm, blades 0.9–5 (–9.5) cm;
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pistillate spikes 1–2, short cylindric, 0.6–1.5 cm × 4–6 mm;
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lateral spikes nodding on flexible peduncles.
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Pistillate scales reddish-brown tinged, ovate, broadly acute or obtuse.
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Perigynia (3–) 5–18, dense, glaucous-green, finely many-veined, 2.8–4 × 1.2–1.5 mm, apex gradually tapered to entire orifice, papillose;
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beak absent or poorly defined, to 0.3 mm.
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Achenes light to dark-brown, 1.5 –1.9 × 1–1.2 mm.
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1.25-2.75 times longer than proximal bract
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