Dryas alaskensis A. E. Porsild (Q3863)

From Canadian Flora Commons
Jump to navigation Jump to search
Dryas alaskensis is a taxon with the rank species within the genus Dryas
Language Label Description Also known as
English
Dryas alaskensis A. E. Porsild
Dryas alaskensis is a taxon with the rank species within the genus Dryas

    Statements

    taxon/id/Dryas alaskensis A.E. Porsild
    0 references
    Dryas alaskensis A.E. Porsild
    Dryas alaskensis
    A.E. Porsild
    FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
    accepted
    dryade d'Alaska (French)
    Alaska mountain avens (English)
    Alaskan mountain-avens (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.
    e Asia (Russian Far East: Chukotka)
    Flowering Jun–Aug.
    solifluction soil
    sand-gravel beaches
    sandy lakeshores
    old beach ridges
    wet meadows
    stream banks
    dry rocky knolls
    rocky heath
    tundra
    100–1800 m
    Plants 2–18 cm.
    Leaf-blades obovate or oblongelliptic to narrowly oblong, 4.5–39 × 2–19 mm, base usually cuneate, sometimes truncate or cordate, margins coarsely dentate to crenate, sinuses 45–60% to midvein, apex rounded to obtuse, surfaces smooth to rugose, plicate, midvein and lateral-veins adaxially sunken into folds, abaxial sparsely hairy to tomentose, adaxial usually glabrous, sometimes sparsely hairy proximally on midvein, feathery hairs and stipitate-glands absent.
    Peduncles 25–130 mm.
    Flowers erect at flowering;
    sepals lanceolate to narrowly elliptic, 5.5–9 × 1.5–2 mm;
    petals 8, spreading, usually white or cream, sometimes yellow, 9–14 × 5–11 mm;
    filaments glabrous.
    Achenes 2–3 mm;
    styles 12–27 mm. 2n = 18.