Tephroseris yukonensis (A. E. Porsild) Holub (Q2959)

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Tephroseris yukonensis is a taxon with the rank species within the genus Tephroseris
Language Label Description Also known as
English
Tephroseris yukonensis (A. E. Porsild) Holub
Tephroseris yukonensis is a taxon with the rank species within the genus Tephroseris

    Statements

    taxon/id/Tephroseris yukonensis (A.E. Porsild) Holub
    0 references
    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
    Tephroseris yukonensis
    séneçon du Yukon (French)
    Yukon groundsel (English)
    1 reference
    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.
    1 reference
    Cody, W.J. 2000. Flora of the Yukon Territory. 2nd ed. National Research Press, Ottawa. 669 pp.
    1 reference
    Porsild, A.E. & W.J. Cody. 1980. Vascular Plants of the Continental Northwest Territories, Canada. National Museum of Natural Sciences, Ottawa, Ont. 667 pp.
    Flowering Jun–Aug.
    moist tundra meadows
    Stems single or loosely clustered.
    Leaves basal and cauline (basal often withering before flowering);
    petioles unwinged or weakly so, 2–5 cm;
    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).
    Heads 1–4 (–6+).
    Involucres ± abruptly contracted to peduncles.
    Ray-florets (0) or 13–21;
    corolla laminae to 10 mm.
    Disc-florets 40–60;
    corollas ochroleucous or white.
    Cypselae glabrous;
    2n = ca. 46 (48?).