View source for Potentilla hyparctica

{{Treatment/ID
|accepted_name=Potentilla hyparctica
|accepted_authority=Malte
|publications={{Treatment/Publication
|title=Rhodora
|place=36: 177. 1934
|year=1934
}}
|common_names=Arctic cinquefoil
|special_status={{Treatment/ID/Special_status
|code=F
|label=Selected by author to be illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Potentilla robbinsiana subsp. hyparctica
|authority=(Malte) D. Löve
}}
|hierarchy=Rosaceae;Rosaceae subfam. Rosoideae;Rosaceae tribe Potentilleae;Potentilla;Potentilla sect. Aureae;Potentilla hyparctica
|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 hyparctica]]</div></div>
|volume=Volume 9
|mention_page=page 147, 187, 189, 190, 201, 212, 218
|treatment_page=page 192
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>cushion-forming; caudex branches short to elongate, slender, often embedded in old leaf bases. <b>Stems</b> ascending to erect, 0.2–2(–2.5) dm, lengths 1–3(–4) times basal leaves. <b>Basal</b> leaves not in ranks, ternate, (1–)2–8(–10) cm; stipules: apex ± acute; petiole 1–6.5(–8.5) cm, long hairs sparse to common, spreading to subappressed, 0.8–2 mm, weak to ± stiff, glands sparse to common; leaflets 3, central obovate to broadly obovate, 0.5–2.5(–2.8) × 0.3–2(–2.2) cm, petiolule 0–3 mm, margins flat or slightly revolute, not lobed, distal 1/2–2/3(–3/4) evenly incised ± 1/2 to midvein, teeth (2–)3–5 per side, surfaces ± similar, abaxial usually pale green, sometimes grayish, hairs sparse to abundant, 0.5–1.7 mm, adaxial darker green, hairs and glands sparse. <b>Inflorescences</b> 1–3(–5)-flowered. <b>Pedicels</b> straight, 0.3–3 cm in flower, to 9 cm in fruit. <b>Flowers</b>: epicalyx bractlets narrowly to broadly oblong or ovate, 3.5–7 × 1.5–5 mm, margins flat; hypanthium 4–7 mm diam.; sepals 4–8 mm, apex subacute to rounded; petals pale or bright yellow, 4–9 × 4–6 mm; filaments 0.5–1.1 mm, anthers 0.2–0.4 mm; carpels 50–80, styles ± columnar, not or scarcely papillate-swollen proximally, 0.6–0.9 mm. <b>Achenes</b> 1.1–1.3 mm.</span><!--

-->{{Treatment/Body
|distribution=North America;n Eurasia;circumpolar.
|discussion=<p>Subspecies 3 (2 in the flora).</p><!--
--><p>Southern arctic and subarctic plants differ from the northern arctic ones in presumably independent features. Where the two forms are sympatric (western Greenland, northern Quebec, Baffin Island), they appear to remain distinct even in mixed populations and are accordingly treated as subspecies.</p><!--
--><p>Although some features of scattered plants in Alaska and Yukon approach subsp. nivicola Jurtzev & V. V. Petrovsky (described from northeastern Asia), such plants do not otherwise correspond fully with this taxon. Possible hybrids between <i>Potentilla hyparctica</i> and <i>P. pulchella</i> (sect. Pensylvanicae) are addressed in the discussion of sect. Pensylvanicae. Presumed hybrids with <i>P. villosa</i> from the Aleutian Islands, characterized by the combination of basally thickened styles and lack of cottony hairs on leaflet abaxial surfaces, have been named P. ×aleutica Soják.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Epicalyx bractlets narrowly to ± oblong or ovate, 1.5–2 mm wide; central leaflets: petiolules 0–2 mm, bases cuneate.
|[[Potentilla hyparctica subsp. hyparctica|Potentilla hyparctica subsp. hyparctica]]
|-id=key-0-1
|1
|Epicalyx bractlets broadly oblong or ovate, 2–5 mm wide; central leaflets: petiolules (0–)2–3(–5) mm, bases broadly cuneate to rounded.
|[[Potentilla hyparctica subsp. elatior|Potentilla hyparctica subsp. elatior]]
|}
</div></div><!--

-->{{#Taxon:
name=Potentilla hyparctica
|author=
|authority=Malte
|rank=species
|parent rank=section
|synonyms=Potentilla robbinsiana subsp. hyparctica
|basionyms=
|family=Rosaceae
|distribution=North America;n Eurasia;circumpolar.
|reference=None
|publication title=Rhodora
|publication year=1934
|special status=Selected by author to be illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V9/V9_291.xml
|subfamily=Rosaceae subfam. Rosoideae
|tribe=Rosaceae tribe Potentilleae
|genus=Potentilla
|section=Potentilla sect. Aureae
|species=Potentilla hyparctica
}}<!--

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