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Drymocallis pseudorupestris

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 ornamental, 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: DrymocallisView DescriptionDichotomous Key

Habit: Perennial herb, hairs short, simple, nonglandular and/or long, cross-walled, glandular. Stem: +- erect, from +- branched caudex or rhizomes. Leaf: basal and cauline, alternate, odd-1-pinnately compound; leaflets toothed, terminal generally >= lateral. Inflorescence: cyme, +- open; pedicels straight, bractlets 0. Flower: hypanthium +- shallow, bractlets 5; sepals +- triangular; petals < to > sepals, white to yellow; stamens generally 20--25, pollen sac 1, horseshoe-shaped; pistils many, styles fusiform, attached below fruit middle. Fruit: achene, glabrous. Chromosomes: n=7.
Species In Genus: 30 species: northern temperate. Etymology: (Greek: wood beauty) Note: Recognition based on morphological, molecular evidence. Drymocallis ashlandica (Green) Rydb. (inflorescence narrow, petioles glandular, petals yellow) in southwestern Oregon, possibly northwestern California.
Unabridged Note: Convergence of morphological, molecular evidence mandates recognition of Drymocallis; infrageneric taxonomy provisional. Key characters include relative proportions of 2 hair types: short simple nonglandular hairs and longer cross-walled glandular hairs.
eFlora Treatment Author: Barbara Ertter

Drymocallis pseudorupestris (Rydb.) Rydb.
Habit: Tufted to matted. Stem: generally 5--25 cm, glandular hairs abundant at base. Leaf: basal generally 6--9 cm, sheathing base generally appressed-hairy, terminal leaflet generally 5--20 mm, widely obovate to fan-shaped, +- rounded, teeth generally +- single, 4--10 per side. Inflorescence: not leafy, spreading, branch angle generally 20--40°; pedicels generally 3--10 mm, lowermost to 20 mm, glandular hairs generally abundant, short nonglandular hairs 0--many. Flower: opening widely; hypanthium bractlets 2--5 mm, 1--2 mm wide, lance-linear to elliptic-ovate; sepals generally 4--6 mm, acute to obtuse; petals spreading, generally 4--8 mm, > sepals, +- obovate, cream to pale yellow; styles 1--1.5 mm. Fruit: +- 1 mm, light brown.

Synonyms: Potentilla glandulosa subsp. pseudorupestris (Rydb.) D.D. Keck
eFlora Treatment Author: Barbara Ertter
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Citation for this treatment: Barbara Ertter 2017. Drymocallis pseudorupestris, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on September 21, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on September 21, 2017.

Drymocallis pseudorupestris var. crumiana
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© 2012 Steve Matson
Drymocallis pseudorupestris var. crumiana
click for enlargement
© 2012 Steve Matson
Drymocallis pseudorupestris var. crumiana
click for enlargement
© 2012 Steve Matson
Drymocallis pseudorupestris var. crumiana
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© 2012 Steve Matson
Drymocallis pseudorupestris var. saxicola
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© 2011 Steve Matson
Drymocallis pseudorupestris
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© 2010 George W. Hartwell

More photos of Drymocallis pseudorupestris in CalPhotos

Geographic subdivisions for Drymocallis pseudorupestris:
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.