Rubus ursinus Cham. & Schltdl. Rubus ursinus Cham. & Schltdl., Linnaea 2(1): 11–12. 1827 sec. Piedra-Malagón, E.M. 2025≡Rubus vitifolius subsp. ursinus (Cham. & Schltdl.) Abrams, Ill. Fl. Pacific States 2: 458. 1944 syn. sec. Piedra-Malagón, E.M. 2025