Difference between revisions of "Symphyotrichum pygmaeum (Lindley) Brouillet & S. Selliah (Q2516)"
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Latest revision as of 12:49, 24 June 2022
Symphyotrichum pygmaeum is a taxon with the rank species within the subgenus Symphyotrichum subg. Virgulus
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Symphyotrichum pygmaeum (Lindley) Brouillet & S. Selliah
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Symphyotrichum pygmaeum is a taxon with the rank species within the subgenus Symphyotrichum subg. Virgulus
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Statements
taxon/id/Symphyotrichum pygmaeum (Lindley) Brouillet & S. Selliah
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Symphyotrichum pygmaeum (Lindley) Brouillet & S. Selliah
Symphyotrichum pygmaeum
(Lindley) Brouillet & S. Selliah
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 20: Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford University Press, New York.
accepted
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CA-BC
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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-NU
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Aiken, S.G., M.J. Dallwitz, L.L. Consaul, C.L., McJannet, R.L., Boles, G.W. Argus, J.M. Gillett, P.J. Scott, R. Elven, M.C. LeBlanc, L.J. Gillespie, A.K. Brysting, H. Solstad & J.G. Harris. 2007. Flora of the Canadian Arctic Archipelago: Descriptions, Illustrations, Identification, and Information Retrieval. [CD-ROM] NRC Research Press, National Research Council of Canada, Ottawa.
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with short, branched caudices, long-rhizomatous (both wiry).
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Stems 1–10+, decumbent to ascending (purple), sparsely or densely villous to woolly distally.
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Leaves firm, margins usually entire, sometimes remotely pauci-serrulate, sparsely villoso-ciliate, apices obtuse to acute, sometimes mucronate;
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basal often withering by flowering, petiolate (petioles widely winged, sheathing), blades spatulate, 5–19 × 2–4 mm, bases attenuate, apices rounded, faces glabrous or sparsely villous proximally;
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proximal sessile, blades lanceolate to oblong-lanceolate or (sometimes) spatulate, 30–50 × 3–10 mm, bases ± clasping, apices obtuse to acute, faces glabrous or sparsely villous;
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distal sessile, blades lanceolate to oblong, 13–19 × 2–4.5 mm, bases clasping to cuneate, apices acute to obtuse, faces sparsely woolly, sometimes sparsely stipitate-glandular.
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Heads borne singly.
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Peduncles densely villous to lanate distally, bracts 0.
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Involucres hemispherico-campanulate, 9–12.5 mm.
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Phyllaries in 3–4 series (dark purple), lance-oblong or oblong (outer) to linear-lanceolate or sometimes linear (inner), subequal, outer ± herbaceous, bases not indurate, margins herbaceous (outer) to narrowly scarious and erose proximally (inner), strongly purple, villoso-ciliate in green portion, green zones (inner) 1/2–2/3 of distal portions, apices acute to acuminate, inner sometimes apiculate, appressed to loose and squarrose (particularly outer), faces woolly to densely villous, sparsely to moderately stipitate-glandular.
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Ray-florets 16–28;
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corollas purple to violet, laminae 12–18 × 2–3.2 mm.
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Disc-florets 53–55;
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corollas yellow, 5.6–6.5 mm, throats funnelform, lobes triangular, 0.5–0.8 mm (red or white clavate-hairy).
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Cypselae fusiform to cylindro-obconic, ± compressed, [size unknown], 4–7-nerved (faint), faces ± densely strigillose;
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pappi whitish to yellowish, 5–7.2 mm.
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pauci-serrulate
sometimes remotely
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lanceolate
oblong-lanceolate or spatulate
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stipitate-glandular
sometimes sparsely
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hemispherico-campanulate
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villous
sparsely moderately stipitate-glandular
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villous
sparsely moderately stipitate-glandular
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strigillose
more or less densely
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