Jepson eFlora: Taxon page
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Rosa gymnocarpa var. gymnocarpa

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: RosaView DescriptionDichotomous Key

Habit: Shrub to vine, often thicket-forming, generally prickly. Leaf: generally odd-pinnately compound; stipules generally attached to petiole, generally gland-margined. Inflorescence: generally +- cyme or flowers 1; pedicel bractlets 0. Flower: hypanthium urn-shaped, bractlets 0; sepals often with long expanded tip; petals generally 5 (except cultivated), generally pink in California (white to red or yellow); stamens generally > 20; pistils generally many, ovaries superior, styles attached at tip, generally hairy. Fruit: bony achenes generally enclosed in fleshy, generally +- red hypanthium (hip).
Species In Genus: 100+ species: generally northern temperate. Etymology: (Latin: ancient name) Note: Species hybridize freely; other non-natives established locally. FNANM treatment by Lewis & Ertter uses both subspecies, varieties, the latter mostly reserved for localized variants within a subsp.; 2 vars. in Rosa woodsii subsp. gratissima treated here but not in TJM2 (2012).
eFlora Treatment Author: Barbara Ertter
Species: Rosa gymnocarpaView Description 

Common Name: WOOD ROSE
Habit: Loose shrub. Stem: prickles few to many, generally not paired (except SnFrB), 2--8 mm, +- slender, straight. Leaf: axis generally glabrous +- glandular; leaflets glabrous; terminal leaflet margins +- double-toothed, glandular. Flower: hypanthium 1.5--2 mm wide at flower, glabrous and glandless, neck +- 1.5 mm wide; sepals glandular or not, entire, tip generally << body, entire; petals +- 10 mm, pink to red; pistils 5--10. Fruit: 4--12 mm wide, ellipsoid to +- spheric; sepals erect to reflexed, evenly deciduous; achenes (3)4--7 mm. Chromosomes: n=7.

Rosa gymnocarpa Nutt. var. gymnocarpa
Habit: Plant generally +- 5--20 dm. Leaf: leaflets generally (5)7--9; terminal leaflet +- 10--30 mm, elliptic to (ob)ovate, tip +- obtuse. Inflorescence: pedicels generally +- 15--30 mm, generally stalked-glandular. Fruit: 5--12 mm wide, ellipsoid to +- spheric; achenes (1)4--10. Chromosomes: n=7.
Ecology: Common. Generally in shade of forest, scrub, generally not ultramafic substrates; Elevation: 30--2000 m. Bioregional Distribution: NW, CaR, n&c SN, CW, PR, MP; Distribution Outside California: to British Columbia, Montana. Flowering Time: (Feb)Apr--Jul
eFlora Treatment Author: Barbara Ertter
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botanical illustration including Rosa gymnocarpa var. gymnocarpa


Citation for this treatment: Barbara Ertter 2017. Rosa gymnocarpa var. gymnocarpa, Revision 2, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on October 23, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on October 23, 2017.

Rosa gymnocarpa var. gymnocarpa
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© 2017 Steve Matson
Rosa gymnocarpa var. gymnocarpa
click for enlargement
© 2017 Steve Matson
Rosa gymnocarpa var. gymnocarpa
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© 2015 Barry Breckling
Rosa gymnocarpa var. gymnocarpa
click for enlargement
© 2015 Barry Breckling
Rosa gymnocarpa var. gymnocarpa
click for enlargement
© 2017 Steve Matson

More photos of Rosa gymnocarpa var. gymnocarpa in CalPhotos

Geographic subdivisions for Rosa gymnocarpa var. gymnocarpa:
NW, CaR, n&c SN, CW, PR, MP;
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).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

CCH collections by month

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