Carex assiniboinensis W. Boott (Q231)
Carex assiniboinensis is a taxon with the rank species within the section Carex sect. Hymenochlaenae
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Carex assiniboinensis W. Boott
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Carex assiniboinensis is a taxon with the rank species within the section Carex sect. Hymenochlaenae
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Statements
taxon/id/Carex assiniboinensis W. Boott
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Carex assiniboinensis W. Boott
Carex assiniboinensis
W. Boott
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-SK
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Harms, V.L. 2006. Annotated catalogue of Saskatchewan vascular plants. http://www.biodiversity.sk.ca/Docs/AnnotatedCatalogueSKVascPlants2006.pdf
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-MB
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CA-ON
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CA-SK
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US-IA
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US-MI
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US-MN
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Plants densely cespitose, also producing long-arching stolons that root at the tip and form new plants.
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Culms dark maroon at base;
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flowering-stems 35–75 cm, longer than leaves at maturity, 0.5–0.8 mm thick, glabrous or minutely scabrous on angles, especially within inflorescence.
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Leaves: basal sheaths maroon, bladeless, glabrousl;
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blades flat, 1–3 mm wide, glabrous on adaxial surface, often strigose on abaxial surface, margins and midribs of abaxial surface scabrous at distal end.
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Inflorescences: peduncles of lateral spikess 20–60 mm, glabrous;
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peduncle of ternimal spike 40–60 mm, glabrous or minutely scabrous on angles;
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proximal bracts much shorter than inflorescence;
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blades 1.5–2.2 mm wide.
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Lateral spikes 2–5, pistillate with fewer than 10 perigynia attached 3–15 mm apart, 1 spike per node, well separated, erect or drooping, linear, 5–30 × 3–5 mm;
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distal spikes sometimes staminate and shorter than terminal spike.
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Terminal spike staminate, 11–30 × 1.5–3 mm.
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Pistillate scales pale hyaline, often partially suffused with chestnut-brown, with narrow green midrib, lanceolate to oblong, shorter than mature pergiynia, apex cuspidate or acuminate with serrulate green awn 1–3 mm, glabrous.
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Perigynia green, at least body maturing to yellow, 2-ribbed but not obviously otherwise veined, except sometimes near base, tightly enveloping achene, lanceellipsoid, 5–6.5 × 0.8–1.8 mm, cartilaginous, base with stipe 0.5 mm, apex tapering gradually to beak, short-pubescent;
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beak oblique to minutely toothed, 2.5 mm.
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Achenes stipitate, 1.8–2.5 × 0.7–1 mm, stipe adnate to thickened perigynium base, breaking from achene at maturity.
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suffused with chestnut-brown
often partially; partially
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shorter than mature pergiynia
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