Difference between revisions of "Petasites frigidus (Linnaeus) Fries (Q2923)"
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Latest revision as of 12:50, 24 June 2022
Petasites frigidus is a taxon with the rank species within the genus Petasites
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Petasites frigidus (Linnaeus) Fries
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Petasites frigidus is a taxon with the rank species within the genus Petasites
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taxon/id/Petasites frigidus (Linnaeus) Fries
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Petasites frigidus (Linnaeus) Fries
Petasites frigidus
(Linnaeus) Fries
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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CA-BC
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CA-MB
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CA-NB
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CA-NS
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CA-NT
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CA-NL
Nfld. and Labr.
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CA-NU
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CA-ON
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CA-PE
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CA-QC
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CA-SK
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CA-YT
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US-AK
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US-CA
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US-CO
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US-CT
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US-ID
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US-ME
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US-MA
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US-MI
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US-MN
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US-MT
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US-ND
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US-NH
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US-NY
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US-OR
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US-RI
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US-SD
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US-VT
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US-WA
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US-WI
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US-WY
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Plants 10–60 (–120) cm.
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Rhizomes much branched, creeping, often forming long-lived, spreading clones.
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Basal leaves: blades mostly reniform, orbiculate-cordate, cordate, ovate, triangular, or sagittate, margins subentire to coarsely dentate to wavy, or shallowly to deeply pinnipalmately or palmately lobed, lobes obtuse to acute, often again lobed or toothed, abaxial faces densely white-tomentose to lanate, adaxial faces densely lanate or floccose, glabrescent, or glabrous.
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Staminate heads 2–53 (ray-florets: 0 or 1–70, styliferous and sterile, corolla laminae 1.1–12 mm; disc-florets 11–78, functionally staminate; style-branches 0–2.3 mm, papillate or hairy).
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Pistillate heads 5–60 (ray-florets 30–139, pistillate and fertile, corolla laminae 0.6–6.3 mm; disc-florets 1–12, functionally staminate, style-branches 0–2.3 mm, papillate or hairy).
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Phyllaries: staminate 3.6–12.8 × 1–4.4 mm, pistillate 1–9.5 × 0.7–3.3 mm, margins entire or serrate.
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Cypselae 1.7–3.5 mm;
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pappi (longest, pistillate heads) 7–17.3 mm.
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densely white-tomentose
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