View source for Dryas alaskensis

{{Treatment/ID
|accepted_name=Dryas alaskensis
|accepted_authority=A. E. Porsild
|publications={{Treatment/Publication
|title=Canad. Field-Naturalist
|place=61: 187, plate 1, figs. 3 – 5. 1948
|year=1948
}}
|common_names=Alaskan mountain-avens
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Dryas octopetala subsp. alaskensis
|authority=(A. E. Porsild) Hultén
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=D. octopetala var. glabrata
|authority=Hultén
|rank=variety
}} {{Treatment/ID/Synonym
|name=D. punctata subsp. alaskensis
|authority=(A. E. Porsild) Jurtzev
|rank=subspecies
}}
|hierarchy=Rosaceae;Rosaceae subfam. Dryadoideae;Rosaceae tribe Dryadeae;Dryas;Dryas alaskensis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Rosaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Rosaceae subfam. Dryadoideae]]</div><div class="higher-taxon"><small>tribe</small>[[Rosaceae tribe Dryadeae]]</div><div class="higher-taxon"><small>genus</small>[[Dryas]]</div><div class="higher-taxon"><small>species</small>[[Dryas alaskensis]]</div></div>
|volume=Volume 9
|mention_page=page 328, 330
|treatment_page=page 329
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>2–18 cm. <b>Leaf</b> blades obovate or oblong-elliptic 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. <b>Peduncles</b> 25–130 mm. <b>Flowers</b> 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. <b>Achenes</b> 2–3 mm; styles 12–27 mm. <b>2n</b> = 18.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Aug.
|habitat=Solifluction soil, sand-gravel beaches, sandy lakeshores, old beach ridges, wet meadows, stream banks, dry rocky knolls, rocky heath, ericaceous tundra
|elevation=100–1800 m
|distribution=Yukon;Alaska;e Asia (Russian Far East: Chukotka).
|discussion=<p><i>Dryas</i> punctata Juzepczuk has been reported from North America as a synonym of <i>D. octopetala</i> var. octopetala (E. Hultén 1968); it is now considered to be confined to northeastern Europe and northern Asia (R. Elven et al., http://nhm2.uio.no/paf/). Hultén (1959b) reduced <i>D. octopetala</i> <i></i>var.<i> glabrata</i> to the rank of forma and later to synonymy under <i>D. alaskensis</i> (Hultén 1968).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Dryas alaskensis
|authority=A. E. Porsild
|rank=species
|parent rank=genus
|synonyms=Dryas octopetala subsp. alaskensis;D. octopetala var. glabrata;D. punctata subsp. alaskensis
|basionyms=
|family=Rosaceae
|phenology=Flowering Jun–Aug.
|habitat=Solifluction soil, sand-gravel beaches, sandy lakeshores, old beach ridges, wet meadows, stream banks, dry rocky knolls, rocky heath, ericaceous tundra
|elevation=100–1800 m
|distribution=Yukon;Alaska;e Asia (Russian Far East: Chukotka).
|reference=None
|publication title=Canad. Field-Naturalist
|publication year=1948
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V9/V9_537.xml
|subfamily=Rosaceae subfam. Dryadoideae
|tribe=Rosaceae tribe Dryadeae
|genus=Dryas
|species=Dryas alaskensis
}}<!--

-->[[Category:Treatment]][[Category:Dryas]]