Jepson eFlora: Taxon page
Vascular Plants of California
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Potentilla jepsonii

Higher Taxonomy
Family: RosaceaeView DescriptionDichotomous Key
Common Name: ROSE FAMILY
Habit: Annual to tree, glandular or not. Leaf: simple to palmately or pinnately compound, generally alternate; stipules free to fused (0), persistent to deciduous. Inflorescence: cyme, raceme, panicle, cluster, or flowers 1; bractlets on pedicel ("pedicel bractlets") generally 0--3(many), subtended by bract or generally not. Flower: generally bisexual, radial; hypanthium free or fused to ovary, saucer- to funnel-shaped, subtending bractlets ("hypanthium bractlets") 0--5, alternate sepals; sepals generally 5; petals generally 5, free; stamens (0,1)5--many, anther pollen sacs generally 2; pistils (0)1--many, simple or compound, ovary superior to inferior, styles 1--5. Fruit: 1--many per flower, achene (fleshy-coated or not), follicle, drupe, or pome with generally papery core, occasionally drupe-like with 1--5 stones. Seed: generally 1--5 (per fruit, not per flower).
Genera In Family: 110 genera, +- 3000 species: worldwide, especially temperate; many cultivated for ornament, fruit, especially Cotoneaster, Fragaria, Malus, Prunus, Pyracantha, Rosa, Rubus. Note: Number of teeth is per leaf or leaflet, not per side of leaf or leaflet, except in Drymocallis.
eFlora Treatment Author: Daniel Potter & Barbara Ertter, family description, key to genera, treatment of genera by Daniel Potter, except as noted
Scientific Editor: Daniel Potter, Thomas J. Rosatti.
Genus: PotentillaView DescriptionDichotomous Key

Habit: Annual to perennial herb; odor generally 0. Leaf: generally basal, odd-1-pinnately, 1-palmately, or 1-ternately compound; leaflets 1--8(13) per side, +- toothed, generally +- separated, terminal generally +- = lateral; margins generally flat. Inflorescence: generally cyme, generally +- open; pedicels generally +- straight, bractlets 0. Flower: hypanthium +- shallow, bractlets generally 5, generally < sepals, generally flat; sepals +- triangular; petals (2)4--20 mm, >= sepals, generally +- widely obcordate, generally yellow; stamens 10--25; pistils generally > 10, ovaries superior, styles slender to +- tapering, generally attached near fruit tip. Fruit: achene, generally glabrous.
Etymology: (Latin: diminutive of powerful, for reputed medicinal value) Note: Other taxa in TJM (1993) moved to Comarum, Dasiphora, Drymocallis.
eFlora Treatment Author: Barbara Ertter
Potentilla jepsonii Ertter
Habit: Plant tufted from simple or few-branched caudex, +- glandular. Stem: decumbent to +- erect, (2)5--25 cm, generally ascending-hairy. Leaf: subpinnate, petiole generally +- = blade; basal generally 2--10 cm; leaflets generally 2--3 per side, larger 5--20(30) mm, +- elliptic-oblanceolate, +- evenly 7--11-toothed +- 3/4 to midvein, densely appressed- and tangled-hairy abaxially, generally greener and loose-hairy adaxially; margins +- rolled under. Inflorescence: +- 3--12(20)-flowered. Flower: hypanthium 2.5--5 mm wide; petals 2--5 mm; filaments 0.5--2 mm, anthers 0.3--0.7 mm; styles +- 1 mm, tapered from rough-thickened base. Fruit: +- 1 mm, +- smooth or faintly veined, +- brown.
Ecology: Alpine meadows, rocky barrens; Elevation: 2700--3800 m. Bioregional Distribution: c&s SNH, n W&I; Distribution Outside California: western North America. Flowering Time: Jun--Aug Note: Hybridizes with Potentilla pseudosericea.
Synonyms: Potentilla pensylvanica L. var. ovium Jeps.
Jepson eFlora Author: Barbara Ertter
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

Previous taxon: Potentilla hickmanii
Next taxon: Potentilla millefolia

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Citation for this treatment: Barbara Ertter 2012, Potentilla jepsonii, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on September 26, 2022.

Citation for the whole project: Jepson Flora Project (eds.) 2022, Jepson eFlora,, accessed on September 26, 2022.

Potentilla jepsonii
click for enlargement
© 2012 Steve Matson
Potentilla jepsonii
click for enlargement
© 2012 Steve Matson
Potentilla jepsonii
click for enlargement
© 2012 Steve Matson
Potentilla jepsonii
click for enlargement
© 2012 Steve Matson
Potentilla jepsonii
click for enlargement
© 2012 Steve Matson
Potentilla jepsonii
click for enlargement
© 2012 Steve Matson

More photos of Potentilla jepsonii in CalPhotos

Geographic subdivisions for Potentilla jepsonii:
c&s SNH, n W&I
1. You can change the display of the base map layer control box in the upper right-hand corner.
2. County and Jepson Region polygons can be turned off and on using the check boxes.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).


Data provided by the participants of the  Consortium of California Herbaria.
View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).