Tephroseris yukonensis (A. E. Porsild) Holub (Q2959)
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Tephroseris yukonensis is a taxon with the rank species within the genus Tephroseris
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Tephroseris yukonensis (A. E. Porsild) Holub
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Tephroseris yukonensis is a taxon with the rank species within the genus Tephroseris
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Statements
taxon/id/Tephroseris yukonensis (A.E. Porsild) Holub
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Tephroseris yukonensis (A.E. Porsild) Holub
Tephroseris yukonensis
(A.E. Porsild) Holub
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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Douglas, G.W., G.B. Straley, D.V. Meidinger & J. Pojar. 1998. Illustrated Flora of British Columbia. B.C. Ministry of Environment, Lands & Parks and B.C. Ministry of Forests. Victoria. Crown Publications. 8 vols.
CA-YT
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Cody, W.J. 2000. Flora of the Yukon Territory. 2nd ed. National Research Press, Ottawa. 669 pp.
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.
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US-AK
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Stems single or loosely clustered.
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Leaves basal and cauline (basal often withering before flowering);
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petioles unwinged or weakly so, 2–5 cm;
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blades ovate to broadly lanceolate, 2–5 × 1–3 cm, margins subentire to dentate or wavy (proximal cauline petioles usually winged, 0.5–1.5 cm, blades narrowly ovate to lanceolate, 2–4+ × 0.5–2 cm, margins subentire to wavy; mid and distal cauline smaller, clasping, bractlike).
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Involucres ± abruptly contracted to peduncles.
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Ray-florets (0) or 13–21;
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corolla laminae to 10 mm.
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Disc-florets 40–60;
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corollas ochroleucous or white.
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Cypselae glabrous;
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2n = ca. 46 (48?).
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