Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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Annual to tree
Leaves simple to pinnately to palmately compound, generally alternate; stipules free to fused, persistent to deciduous
Inflorescence: cyme, raceme, panicle, or flowers solitary
Flower generally bisexual, radial; hypanthium free or fused to ovary, saucer- to funnel-shaped, often with bractlets alternate with sepals; sepals generally 5; petals generally 5, free; stamens (0)5–many, pistils (0)1–many, simple or compound; ovary superior to inferior, styles 1–5
Fruit: achene, follicle, drupe, pome, or blackberry- to raspberry-like
Seeds generally 1–5
Genera in family: 110 genera, ± 3000 species: worldwide, especially temp. Many cultivated for ornamental and fruit, especially Cotoneaster , Fragaria , Malus , Prunus , Pyracantha, Rosa , and Rubus
Reference: [Robertson 1974 J Arnold Arbor 55:303–332,344–401,611–662]
Family description, key to genera by Barbara Ertter and Dieter H. Wilken.



Barbara Ertter

Annual to shrub; odor resinous or 0
Leaves generally basal, odd-1-pinnate to 1-palmate or 1-ternate; leaflets ± toothed or lobed, terminal generally ± = lateral
Inflorescence: cyme, generally ± open; pedicels generally ± straight
Flower: hypanthium ± shallow; bractlets 5; sepals generally 5, ± triangular; petals generally 5, generally = or > sepals, generally ± widely obcordate, generally yellow; stamens generally 20; pistils generally many, styles generally jointed near tip
Fruit: achene
Species in genus: 200–500 species: n temp
Etymology: (Latin: diminutive of powerful, for reputed medicinal value)
Reference: [Clausen, Keck, & Hiesey 1940 Carn Inst Wash Pub 520:26–195]
P. anglica Laicharding is a waif from cultivated: stem trailing; pedicels 2–8 cm, slender; sepals and petals generally 4; leaflets 3–5.


P. glandulosa Lindl.

Plant generally ± tufted from loosely branched caudex; glandular hairs often many
Stem ± erect, 5–90 cm, spreading-hairy
Leaves pinnate; basal 3–30 cm, terminal leaflet largest (0.5–12 cm), lateral generally 3–5 per side, ± obovate, toothed 1/4–1/2 to midvein, ± hairy
Inflorescence generally 2–30-flowered
Flower: hypanthium 3–6 mm wide; petals 3–10 mm, generally widely ovate, yellow to white; stamens ± 25, filaments 1–3.5 mm (longest opposite sepals), anthers 0.6–1.2 mm; styles ± 1–2.5 mm, attached below middle of fruit, ± fusiform and rough
Fruit ± 1 mm, smooth or ± ridged, golden to reddish brown
Chromosomes: n=7
Ecology: Common. Many habitats
Elevation: < 3800 m.
Bioregional distribution: California Floristic Province (except Great Central Valley), Great Basin Floristic Province
Distribution outside California: w N.America
Often confused with Horkelia ; despite much work, subspp. remain poorly defined.


subsp. glandulosa

Stem generally 20–80 cm, densely glandular-hairy
Leaves: basal generally 10–25 cm, sheathing base glabrous to glandular, terminal leaflet generally 20–60 mm, lateral leaflet teeth > 10, generally double
Inflorescence: branch angle generally 30–60°
Flower: bractlets 1–3 mm wide; petals 4.5–7 mm, ± = sepals, ± ovate, cream to pale yellow; styles ± 1–1.5 mm
Ecology: Generally ± shady or cleared slopes
Elevation: generally < 1200 m.
Bioregional distribution: Northwestern California, Sierra Nevada Foothills, Central Western California, Southwestern California
Distribution outside California: to British Columbia, Idaho
Synonyms: subsp. typica D.D. Keck
Horticultural information: SUN: 4, 5, 6 &IRR: 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24.

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bioregional map for POTENTILLA%20glandulosa%20subsp.%20glandulosa being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Potentilla glandulosa subsp. glandulosa
Retrieve dichotomous key for Potentilla
Overlay Consortium of California Herbaria specimen data by county on this map
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