California Blackberry... idfg.idaho.gov

1200px-Rubus_ursinus_ssp.... en.m.wikipedia.org

Dewberry, Trailing... science.halleyhosting.com

Rubus ursinus - Burke... burkeherbarium.org

California Blackberry,... science.halleyhosting.com

Rubus ursinus - Wikipedia en.wikipedia.org

California Blackberry,... science.halleyhosting.com

E-Flora BC: Electronic... linnet.geog.ubc.ca

trailing blackberry (Rubus... www.inaturalist.org

Rubus ursinus - Web page... sheffields.com

Rubus ursinus Cham nathistoc.bio.uci.edu

California Blackberry,... science.halleyhosting.com

Rubus ursinus - Web page... sheffields.com

trailing blackberry (Rubus... www.inaturalist.org

traildraw_orig.png biol140.weebly.com

USDA Plants Database plants.sc.egov.usda.gov

Rubus ursinus Cham nathistoc.bio.uci.edu

Rubus ursinus - Burke... burkeherbarium.org

Rubus Ursinus - Trailing... gardenecology.pdx.edu

Rubus www.funet.fi