Erigeron porsildii G. L. Nesom & D. F. Murray (Q2179)

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Erigeron porsildii is a taxon with the rank species within the genus Erigeron
Language Label Description Also known as
English
Erigeron porsildii G. L. Nesom & D. F. Murray
Erigeron porsildii is a taxon with the rank species within the genus Erigeron

    Statements

    taxon/id/Erigeron porsildii G.L. Nesom & D.F. Murray
    0 references
    Erigeron porsildii G.L. Nesom & D.F. Murray
    Erigeron porsildii
    G.L. Nesom & D.F. Murray
    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
    vergerette de Porsild (French)
    Porsild's arctic fleabane (English)
    Porsild's fleabane (English)
    Porsild’s Arctic fleabane (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
    Cody, W.J. 2000. Flora of the Yukon Territory. 2nd ed. National Research Press, Ottawa. 669 pp.
    Flowering (Jun–)Jul–Aug(–Sep).
    cliffs
    ( calcareous ) slopes
    shaley gravel
    grassy ravines
    dry tundra
    rhizomatous, fibrous-rooted, rhizomes horizontal or erect, sometimes branched, relatively short, sometimes resembling taproots.
    Stems erect, sparsely to moderately villous (hairs 0.5–1.6 mm), usually stipitate-glandular (hairs 0.05–0.4 mm).
    Leaves basal (persistent) and cauline;
    basal blades oblong-oblanceolate to narrowly obovate, 30–120 × (3–) 5–14 mm, margins entire (apices acute), faces densely hirsute to coarsely villous, sparsely stipitate-glandular to minutely glandular;
    cauline blades oblong-lanceolate to lanceolate, gradually reduced distally or nearly equal-sized (bases often subclasping).
    Involucres 6–10 × 12–20 mm.
    Ray-florets 65–110;
    corollas white to lavender or blue, 13–17 mm (1.2–1.7 mm wide), laminae weakly coiling.
    Disc corollas 3.8–4.5 mm.
    Cypselae 2–2.5 mm, 2-nerved, faces sparsely strigose;
    pappi: outer of relatively long setae or scales, inner of 14–20 (–25) bristles.