View source for Potentilla jepsonii

{{Treatment/ID
|accepted_name=Potentilla jepsonii
|accepted_authority=Ertter
|publications={{Treatment/Publication
|title=J. Bot. Res. Inst. Texas
|place=2: 202. 2008
|year=2008
}}
|common_names=Jepson’s potentilla
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Synonym
|name=Potentilla pensylvanica var. ovium
|authority=Jepson
}}
|synonyms={{Treatment/ID/Synonym
|name=P. litoralis var. ovium
|authority=(Jepson) Soják
}}
|hierarchy=Rosaceae;Rosaceae subfam. Rosoideae;Rosaceae tribe Potentilleae;Potentilla;Potentilla sect. Pensylvanicae;Potentilla jepsonii
|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. Pensylvanicae]]</div><div class="higher-taxon"><small>species</small>[[Potentilla jepsonii]]</div></div>
|volume=Volume 9
|mention_page=page 209, 210, 214, 217
|treatment_page=page 216
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>decumbent to nearly erect, (0.2–)0.5–2.6 dm. <b>Basal</b> leaves subpinnate to subpalmate, 1.5–10(–17) cm; petiole 0.5–4(–8) cm, long hairs ± abundant, spreading to loosely appressed, 0.5–2 mm, weak to stiff, short hairs absent or sparse, cottony or crisped hairs absent, glands sparse to abundant; leaflets (1–)2–3 per side, on distal 1/6–1/3(–1/2) of leaf axis, separate to slightly overlapping, terminal ones oblanceolate-elliptic to narrowly obovate, (0.5–)1–2.5(–3.5) × 0.4–1(–1.3) cm, margins strongly revolute, incised 3/4+ to midvein, undivided medial blade 1.5–3(–5) mm wide, teeth (2–)3–5(–6) per side, ± linear-elliptic to rarely ovate or oblanceolate, surfaces ± dissimilar, abaxial ± grayish, rarely white, long hairs ± abundant especially on veins, 1 mm, weak, short hairs absent or sparse, cottony hairs absent, crisped hairs sparse to abundant, glands ± abundant, sometimes obscured, adaxial green to gray-green, long hairs sparse to abundant, loosely appressed, 0.5–1(–2) mm, short hairs absent or sparse, cottony and crisped hairs absent, glands ± abundant. <b>Cauline</b> leaves 1–2. <b>Inflorescences</b> (1–)3–12(–20)-flowered, congested, scarcely opening in fruit. <b>Pedicels</b> 0.2–0.5 cm (proximal to 1.2 cm). <b>Flowers</b>: epicalyx bractlets elliptic to linear, 1.5–3 × (0.3–)0.5–1.2 mm, lengths 1/2–3/4 times sepals, margins flat; hypanthium 2.5–5 mm diam.; sepals 2–5 mm, apex usually ± acute to obtuse, rarely acuminate, abaxial surfaces: venation faint, glands abundant, evident; petals pale yellow, 2–5 × 2–4 mm, lengths ± equal to sepals; filaments 0.5–2 mm, anthers 0.3–0.7 mm; carpels 20–60, styles papillate-swollen in proximal 1/2–3/4+, 0.8–1.2 mm. <b>Achenes</b> 1 mm, smooth to faintly rugose.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer.
|habitat=Seasonally moist sites in alpine meadows, ridges, fellfields, rock ledges, talus slopes
|elevation=2500–3700 m
|distribution=Alta.;Ariz.;Calif.;Colo.;Idaho;Mont.;Nev.;Oreg.;Utah;Wash.
|discussion=<p><i>Potentilla jepsonii</i> (a replacement name for <i>P. pensylvanica</i> var. ovium) is widespread at higher elevations in the Intermountain Region, extending into the Sierra <i>Nevada</i> in California and the Rocky Mountains in Idaho and Wyoming. Disjunct occurrences are known on the north rim of the Grand Canyon and San Francisco Peaks, Arizona, and Steens Mountain, Oregon. Collections have most commonly been included in <i>P. pensylvanica</i> (for example, B. Ertter 1993; N. H. Holmgren 1997b); they differ in leaf division, vestiture, and epicalyx bractlets. J. Soják considered var. ovium to be a variety of <i>P. litoralis</i>, which has comparable leaves and vestiture; <i>P. jepsonii</i> lacks the enlarged, revolute epicalyx bractlets that distinguish <i>P. litoralis</i> and is for the most part well separated geographically and elevationally. The exception is the montane phase of <i>P. litoralis</i>, which, at the current stage of knowledge, is somewhat arbitrarily delimited from <i>P. jepsonii</i> in the northern Rocky Mountains; collections from Waterton Lakes National Park in Alberta and the Okanogan Mountains in Washington are tentatively placed here in <i>P. jepsonii</i>.</p>
|tables=
|references=
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-->{{#Taxon:
name=Potentilla jepsonii
|author=
|authority=Ertter
|rank=species
|parent rank=section
|synonyms=P. litoralis var. ovium
|basionyms=Potentilla pensylvanica var. ovium
|family=Rosaceae
|phenology=Flowering summer.
|habitat=Seasonally moist sites in alpine meadows, ridges, fellfields, rock ledges, talus slopes
|elevation=2500–3700 m
|distribution=Alta.;Ariz.;Calif.;Colo.;Idaho;Mont.;Nev.;Oreg.;Utah;Wash.
|reference=None
|publication title=J. Bot. Res. Inst. Texas
|publication year=2008
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V9/V9_324.xml
|subfamily=Rosaceae subfam. Rosoideae
|tribe=Rosaceae tribe Potentilleae
|genus=Potentilla
|section=Potentilla sect. Pensylvanicae
|species=Potentilla jepsonii
}}<!--

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