Erigeron formosissimus Greene (Q2191)
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Erigeron formosissimus is a taxon with the rank species within the genus Erigeron
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English |
Erigeron formosissimus Greene
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Erigeron formosissimus is a taxon with the rank species within the genus Erigeron
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Statements
taxon/id/Erigeron formosissimus Greene
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Erigeron formosissimus Greene
Erigeron formosissimus
Greene
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-AB
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University of Waterloo Herbarium (WAT), Waterloo, Ont. Specimen. [Now incorporated at MT] http://sweetgum.nybg.org/science/ih/herbarium-details/?irn=126888
US-AZ
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US-CO
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US-NM
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US-SD
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US-UT
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US-WY
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rhizomatous, fibrous-rooted, rhizomes variably thick.
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Stems ascending, densely hirsute to hirsutulous or glabrous, minutely glandular to stipitate-glandular.
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Leaves basal (persistent) and cauline;
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basal blades oblanceolate to oblanceolate-spatulate, 20–100 (–150) × 4–10 (–15) mm, margins entire, closely ciliate, faces glabrous or sparsely hirsute, sometimes sparsely glandular;
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cauline blades becoming ovate to lanceolate, gradually reduced distally (bases clasping).
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Involucres 5–8 × 10–20 mm.
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Ray-florets 75–150;
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corollas blue to purple, rarely pink to white, 8–15 mm (ca. 1 mm wide), laminae coiling at tips or not at all.
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Disc corollas 3.5–4.5 mm.
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Cypselae (1.3–) 1.6–1.9 mm, 2-nerved, faces sparsely strigose;
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pappi: outer of setae, inner of 15–25 bristles.
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densely hirsute
hirsutulous or glabrous minutely glandular
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densely hirsute
hirsutulous or glabrous minutely glandular
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oblanceolate
oblanceolate-spatulate
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