Dryas Linnaeus (Q3855)
Dryas is a taxon with the rank genus within the tribe Dryadeae
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Dryas Linnaeus
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Dryas is a taxon with the rank genus within the tribe Dryadeae
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Statements
taxon/id/Dryas Linnaeus
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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
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Shrubs, tufted or matted, scapose, 0.1–2.3 dm;
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caudices relatively long, woody.
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Stems 3+, branched, rooting freely;
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short and long-shoots absent;
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stoloniferous branches horizontal, relatively short, glabrous.
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Leaves persistent, simple or (in D. drummondii) basal leaflets 1 (–2);
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stipules persistent, narrowly lanceolate, margins usually entire, sometimes 1–2-toothed;
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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.
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Inflorescences terminal, flowers solitary;
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bracteoles absent.
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Pedicels present.
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Flowers 13–29 mm diam.;
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hypanthium saucer-shaped, 3–15 mm, exterior villous, stipitate-glandular;
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sepals 8–10, ascending to spreading, linear-oblong or linear-lanceolate to lanceolate, elliptic, or ovate;
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petals 8–10 (–12), deciduous or persistent, usually white or cream, sometimes yellow, ovate to obovate, oblanceolate, or ovoid;
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stamens 50–130, shorter than petals;
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torus hemispheric;
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carpels 60–150, sessile, stigmas lateral.
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Fruits aggregated achenes, 20–40, linear to lanceolate, 0.8–3.5 mm, smooth with many short white hairs;
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hypanthium persistent;
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linear-lanceolate
lanceolate elliptic or ovate
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linear-lanceolate
lanceolate elliptic or ovate
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linear-lanceolate
lanceolate elliptic or ovate
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obovate oblanceolate or ovoid
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obovate oblanceolate or ovoid
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obovate oblanceolate or ovoid
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