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Taxon: Rubus ursinus Cham. & Schltdl.

Genus: Rubus
Subgenus: Rubus
Section: Ursini
Family: Rosaceae
Subfamily: Rosoideae
Tribe: Rubeae
Nomen number: 32482
Place of publication: Linnaea 2:11. 1827
Link to protologue:
Comment: the first author to unite R. ursinus and R. vitifolius, two names of equal priority, seems to have been Brewer & Watson (in Bot. California 1:172-173. 1876), who chose R. ursinus (Shenzhen ICN Art. 11.5)
Name Verified on: 09-Dec-1999 by ARS Systematic Botanists.
Accessions: 84 (84 active, 48 available) in National Plant Germplasm System (Map)

Common names:

  • California blackberry  (Source: F CalifJep) - English
  • California dewberry  (Source: Cornucopia) - English
  • Douglas-berry  (Source: F Pacif NW) - English
  • Pacific blackberry  (Source: Dict Rehm) - English
  • Pacific dewberry  (Source: Hortus 3) - English

Economic Importance:

  • Harmful organism host: crop diseases; crop pests
  • Human food: fruit
  • Weed:

Distributional Range:


    Northern America
    • WESTERN CANADA: Canada [British Columbia (s.w.)]
    • NORTHWESTERN U.S.A.: United States [Idaho, Oregon, Washington]
    • SOUTHWESTERN U.S.A.: United States [California (w.-c. (Mendocino to San Luis Obispo Cos.))]
    • NORTHERN MEXICO: Mexico [Baja California (Norte) (n.)]


  1. Clark, J. R. et al. 2007. Chapter 2. Blackberry breeding and genetics. Pl. Breed. Rev. 29:19-144.
  2. Converse, R. H., ed. 1987. Virus diseases of small fruits. USDA Agriculture Handbook 631
  3. Douglas, G. W. et al., eds. 1994. The vascular plants of British Colombia
  4. Encke, F. et al. 1984. Zander: Handwörterbuch der Pflanzennamen, 13. Auflage
  5. Facciola, S. 1990. Cornucopia, a source book of edible plants Kampong Publications.
  6. Finn, C. E. et al. 2010. "Wild treasure" thornless trailing blackberry. HortScience 45:434-436. Note: a blackberry cultivar derived from Rubus ursinus
  7. Finn, C. et al. 2001. Breeders experiences with Rubus species. Breeders experiences with Rubus species Note: web based resource; this report cited Rubus ursinus as 7-13 polyploid; it can be crossed with 4-12 polyploid blackberry to produce fertile hybrids; it carries traits of interest to blackberry breeders
  8. FNA Editorial Committee. 1993-. Flora of North America.
  9. Hickman, J. C., ed. 1993. The Jepson manual: higher plants of California
  10. Hitchcock, C. L. et al. 1955-1969. Vascular plants of the Pacific Northwest.
  11. Huxley, A., ed. 1992. The new Royal Horticultural Society dictionary of gardening
  12. IPGRI. New World Fruits Database (on-line resource).
  13. Kunkel, G. 1984. Plants for human consumption
  14. Liberty Hyde Bailey Hortorium. 1976. Hortus third.
  15. Markle, G. M. et al., eds. 1998. Food and feed crops of the United States, ed. 2
  16. Munz, P. A. & D. D. Keck. 1959. A California flora.
  17. Munz, P. A. 1974. A flora of southern California.
  18. Porcher, M. H. et al. Searchable World Wide Web Multilingual Multiscript Plant Name Database (MMPND) (on-line resource).
  19. Rehm, S. 1994. Multilingual dictionary of agronomic plants
  20. Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.
  21. Thompson, M. N. 1995. Chromosome numbers of Rubus cultivars at the National Clonal Germplasm Repository. HortScience 30:1453-1456.
  22. Walters, S. M. et al., eds. 1986-2000. European garden flora.
  23. Wiggins, I. L. 1980. Flora of Baja California.

Check other web resources for Rubus ursinus Cham. & Schltdl. :

Cite as: USDA, Agricultural Research Service, National Plant Germplasm System. 2020. Germplasm Resources Information Network (GRIN-Taxonomy).
National Germplasm Resources Laboratory, Beltsville, Maryland. URL: https://npgsweb.ars-grin.gov/gringlobal/taxonomydetail.aspx?id=32482. Accessed 25 February 2020.