Dryas Linnaeus (Q3855)

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Dryas is a taxon with the rank genus within the tribe Dryadeae
Language Label Description Also known as
English
Dryas Linnaeus
Dryas is a taxon with the rank genus within the tribe Dryadeae

    Statements

    taxon/id/Dryas Linnaeus
    0 references
    Dryas Linnaeus
    Dryas
    Linnaeus
    FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
    accepted
    mountain avens (English)
    Mountain-avens (English)
    dryade (English)
    North America
    Eurasia
    arctic
    boreal
    and alpine regions
    Shrubs, tufted or matted, scapose, 0.1–2.3 dm;
    caudices relatively long, woody.
    Stems 3+, branched, rooting freely;
    short and long-shoots absent;
    stoloniferous branches horizontal, relatively short, glabrous.
    Leaves persistent, simple or (in D. drummondii) basal leaflets 1 (–2);
    stipules persistent, narrowly lanceolate, margins usually entire, sometimes 1–2-toothed;
    blade elliptic, lanceolate, linear, oblong, oblongelliptic, obovate, oval, or ovate, 0.2–3.9 (–4.6) cm, smooth to rugose or plicate, margins usually flat, sometimes revolute, crenate, dentate, serrate, or entire, abaxial surface tomentose or woolly, adaxial usually glabrous, sometimes tomentose or sparsely hairy on proximal portion of midvein.
    Inflorescences terminal, flowers solitary;
    bracteoles absent.
    Pedicels present.
    Flowers 13–29 mm diam.;
    hypanthium saucer-shaped, 3–15 mm, exterior villous, stipitate-glandular;
    sepals 8–10, ascending to spreading, linear-oblong or linear-lanceolate to lanceolate, elliptic, or ovate;
    petals 8–10 (–12), deciduous or persistent, usually white or cream, sometimes yellow, ovate to obovate, oblanceolate, or ovoid;
    stamens 50–130, shorter than petals;
    torus hemispheric;
    carpels 60–150, sessile, stigmas lateral.
    Fruits aggregated achenes, 20–40, linear to lanceolate, 0.8–3.5 mm, smooth with many short white hairs;
    hypanthium persistent;