Difference between revisions of "Taraxacum holmenianum Sahlin (Q3182)"

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Latest revision as of 12:46, 24 June 2022

Taraxacum holmenianum is a taxon with the rank species within the genus Taraxacum
Language Label Description Also known as
English
Taraxacum holmenianum Sahlin
Taraxacum holmenianum is a taxon with the rank species within the genus Taraxacum

    Statements

    taxon/id/Taraxacum holmenianum Sahlin
    0 references
    Taraxacum holmenianum Sahlin
    Taraxacum holmenianum
    FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 19: Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York.
    accepted
    Taraxacum holmenianum
    pissenlit de Holmen (French)
    Holmen's dandelion (English)
    Holmen’s dandelion (English)
    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.
    1 reference
    Aiken, S.G., M.J. Dallwitz, L.L. Consaul, C.L., McJannet, R.L., Boles, G.W. Argus, J.M. Gillett, P.J. Scott, R. Elven, M.C. LeBlanc, L.J. Gillespie, A.K. Brysting, H. Solstad & J.G. Harris. 2007. Flora of the Canadian Arctic Archipelago: Descriptions, Illustrations, Identification, and Information Retrieval. [CD-ROM] NRC Research Press, National Research Council of Canada, Ottawa.
    Greenland, GL
    1 reference
    FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 19: Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York. http://www.efloras.org/volume_page.aspx?volume_id=1019&flora_id=1
    Greenland
    Flowering summer.
    tundra hummocks
    polygons
    open slopes
    gravel
    Plants 5–15 (–20) cm;
    taproots branched.
    Stems 1–7+, ascending, purple, glabrous or glabrate.
    Leaves ca. 10+, horizontal to widely patent, rarely ± erect, (dark green);
    petioles winged mostly narrowly;
    blades oblanceolate to oblong-oblanceolate (runcinate), (1.5–) 2–6 (–9) × 0.3–1.3 cm, bases attenuate, margins lobed regularly, ± alternately, shallowly to deeply, lobes usually straight to slightly retrorse, sometimes slightly antrorse, deltate to triangular, acute to acuminate, apices acute to acuminate, faces glabrous.
    Calyculi of 10–14, appressed to slightly spreading, purplish, ovate to lanceovate bractlets in 2 series, 3–6 (–7.5) × 1.8–2.5 (–3) mm, not or narrowly scarious, hyaline purplish, apices long-acuminate to short-caudate, tips scarious, erose.
    Involucres dark olive green, sometimes purplish, tips purplish, campanulate, 11–15 (–20) mm.
    Phyllaries ca. 14 in 2 series, lanceolate to lanceovate, 1–3 mm wide, margins not scarious or narrowly to widely scarious in proximal 1/2, sometimes distally, apices sometimes callous, sometimes also some small-horned, tips scarious, erose.
    Florets 30–50 (–60);
    corollas dark yellow (outer with distinct, central greenish gray or pinkish stripe, tips dark), 15–20 × 1–3 mm.
    Cypselae yellowish or straw-colored, bodies obovoid to oblanceoloid, 3.5–4.2 mm wide, cones narrowly conic, 0.9–1.1 mm, beaks slender, 4.5–5 mm, ribs 12–16 (3–4 prominent), sharp, faces proximally tuberculate, muricate in distal 1/2;
    pappi white to yellowish, 5.5–6.5 mm. 2n = 16.