Chaenactis douglasii (Hooker) Hooker & Arnott (Q2550)
Chaenactis douglasii is a taxon with the rank species within the genus Chaenactis
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Chaenactis douglasii (Hooker) Hooker & Arnott
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Chaenactis douglasii is a taxon with the rank species within the genus Chaenactis
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Statements
taxon/id/Chaenactis douglasii (Hooker) Hooker & Arnott
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Chaenactis douglasii (Hooker) Hooker & Arnott
Chaenactis douglasii
(Hooker) Hooker & Arnott
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 21: Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford University Press, New York.
accepted
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CA-AB
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CA-BC
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US-AZ
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US-CA
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US-CO
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US-ID
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US-MT
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US-ND
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US-NM
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US-NV
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US-OR
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US-SD
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US-UT
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US-WA
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US-WY
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proximal indument thinning with age, grayish, mostly arachnoid-sericeous to thinly lanuginose.
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Stems 1–25+, erect to spreading.
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Leaves basal, or basal (sometimes withering) and ± cauline, (1–) 2–12 (–15) cm;
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largest blades ± elliptic or slightly lanceolate to ovate, ± 3-dimensional, usually 2-pinnately lobed;
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primary lobes (4–) 5–9 (–12) pairs, ± congested, scarcely imbricate, ultimate lobes ± involute and/or twisted.
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Heads 1–25+ per stem.
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Peduncles mostly ascending to erect, 1–10 cm.
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Involucres obconic to ± hemispheric.
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Phyllaries: longest 9–15 (–17) mm;
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outer usually stipitate-glandular (sometimes sparsely or obscurely, rarely eglandular) and, often, arachnoid to lanuginose and, sometimes, sparsely villous, apices usually ± squarrose, pliant.
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Cypselae 5–8 mm (usually sparsely glandular amidst other indument);
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pappi: longest scales 3–6 mm.
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mostly arachnoid-sericeous
thinly lanuginose
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less elliptic or slightly lanceolate
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more or less; usually 2-pinnately
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obconic
more or less hemispheric
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