View source for Potentilla nana

{{Treatment/ID
|accepted_name=Potentilla nana
|accepted_authority=D. F. K. Schlechtendal
|publications={{Treatment/Publication
|title=Ges. Naturf. Freunde Berlin Mag. Neuesten Entdeck. Gesammten Naturk.
|place=7: 296. 1816
|year=1816
}}
|common_names=Dwarf cinquefoil
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Potentilla emarginata subsp. nana
|authority=(D. F. K. Schlechtendal) Hultén
|rank=subspecies
}}
|hierarchy=Rosaceae;Rosaceae subfam. Rosoideae;Rosaceae tribe Potentilleae;Potentilla;Potentilla sect. Aureae;Potentilla nana
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Rosaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Rosaceae subfam. Rosoideae]]</div><div class="higher-taxon"><small>tribe</small>[[Rosaceae tribe Potentilleae]]</div><div class="higher-taxon"><small>genus</small>[[Potentilla]]</div><div class="higher-taxon"><small>section</small>[[Potentilla sect. Aureae]]</div><div class="higher-taxon"><small>species</small>[[Potentilla nana]]</div></div>
|volume=Volume 9
|mention_page=page 189
|treatment_page=page 192
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>densely tufted; caudex branches short, slender to ± stout, diam. 0.5–1 cm, including old leaf bases. <b>Stems</b> ascending to erect, 0.1–0.5(–0.7) dm, lengths 1–2 times basal leaves. <b>Basal</b> leaves not in ranks, ternate, 1–5 cm; stipules: apex acute; petiole 0.5–3.5 cm, long hairs sparse to abundant, ascending to spreading, 0.5–2 mm, ± soft, glands sparse to common; leaflets 3, central obovate, 0.5–2 × 0.5–1 cm, petiolule 0–1 mm, margins revolute, not lobed, distal 1/2–2/3 evenly incised ± 1/2 to midvein, teeth 3–4(–6) per side, surfaces ± similar, green (paler abaxially), hairs sparse to abundant, 0.8–1.2 mm, glands sparse to common. <b>Inflorescences</b> 1(–2)-flowered. <b>Pedicels</b> straight, 0.2–1.5 cm in flower, to 5 cm in fruit. <b>Flowers</b>: epicalyx bractlets oblong or ovate, 2.5–5 × 1.5–3.5 mm, margins revolute; hypanthium 3–3.5 mm diam.; sepals 2.5–5 mm, apex ± acute; petals pale yellow, 4–8 × 4–6 mm; filaments 1.2–2 mm, anthers 0.3–0.4 mm; carpels 40–50, styles ± columnar, not or scarcely papillate-swollen proximally, 0.8–1.2 mm. <b>Achenes</b> 1.4–1.6 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer.
|habitat=Alpine and coastal Dryas-Salix-Empetrum heaths, gravelly slopes, ridge crests, fellfields, scree and talus
|elevation=100–1100 m
|distribution=B.C.;Alaska.
|discussion=<p><i>Potentilla nana</i> has most often been considered a race of <i>P. hyparctica</i> or as the priority name for <i>P. hyparctica</i>. As now defined, <i>P. nana</i> occurs in an arc across southern Alaska, from the Aleutian and Pribilof islands to the Alaskan panhandle and adjacent British Columbia. T. Wolf (1908) treated it as a dwarf form of <i>P. fragiformis</i>; J. Soják (1996) interpreted <i>P. nana</i> as a hybrid species originating from cross(es) between <i>P. fragiformis</i> and <i>P. hyparctica</i>. Although the hybrid hypothesis has morphologic support, <i>P. nana</i> has a unique combination of morphologic features and has a distinct range from both <i>P. fragiformis</i> and <i>P. hyparctica</i>. The species are also ecologically segregated: <i>P. nana</i> is a coastal heath and gravel slope species, like <i>P. hyparctica</i>; <i>P. fragiformis</i> is strictly maritime coastal.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Potentilla nana
|authority=D. F. K. Schlechtendal
|rank=species
|parent rank=section
|synonyms=Potentilla emarginata subsp. nana
|basionyms=
|family=Rosaceae
|phenology=Flowering summer.
|habitat=Alpine and coastal Dryas-Salix-Empetrum heaths, gravelly slopes, ridge crests, fellfields, scree and talus
|elevation=100–1100 m
|distribution=B.C.;Alaska.
|reference=None
|publication title=Ges. Naturf. Freunde Berlin Mag. Neuesten Entdeck. Gesammten Naturk.
|publication year=1816
|special status=Endemic;Illustrated
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V9/V9_290.xml
|subfamily=Rosaceae subfam. Rosoideae
|tribe=Rosaceae tribe Potentilleae
|genus=Potentilla
|section=Potentilla sect. Aureae
|species=Potentilla nana
}}<!--

-->[[Category:Treatment]][[Category:Potentilla sect. Aureae]]