Rhamnus californica var. viridula Jeps. variety proparte synonym

Rhamnus californica var. ursina (Greene) Mc Minn variety synonym

Frangula californica subsp. ursina (Greene) Kartesz & Gandhi subspecies accepted

Frangula californica subsp. tomentella (Benth.) Kartesz & Gandhi subspecies accepted

Frangula californica subsp. occidentalis (Howell) Kartesz & Gandhi subspecies accepted

Frangula californica subsp. cuspidata (Greene) Kartesz & Gandhi subspecies accepted

Frangula californica subsp. crassifolia (Jeps.) Kartesz & Gandhi subspecies accepted

Rhamnus purshiana var. tomentella (Benth.) K.Brandegee variety synonym

Rhamnus purshiana var. californica (Eschsch.) Rehder variety synonym

Rhamnus cuspidata Greene species synonym

Rhamnus castorea Greene species synonym

Rhamnus oleifolia Hook. species synonym

Rhamnus californica var. ursina (Greene) McMinn variety synonym

Perfonon laurifolium Raf. species synonym

Rhamnus californica var. tomentella (Benth.) W.H.Brewer & S.Watson variety synonym

Rhamnus californica var. occidentalis (Howell) Jeps. variety synonym

Rhamnus californica subsp. cuspidata (Greene) C.B.Wolf subspecies synonym

Rhamnus californica subsp. crassifolia (Jeps.) C.B.Wolf subspecies synonym

Rhamnus californica var. betulifolia Trel. variety synonym

Rhamnus nana Carrière species synonym

Girtanneria franguloides (Willd. ex Roem. & Schult.) Raf. species proparte synonym

Rhamnus major Carrière species synonym

Frangula ursina (Greene) Grubov species synonym

Frangula tomentella (Benth.) Grubov species synonym

Rhamnus ursina Greene species synonym

Rhamnus tomentella subsp. ursina (Greene) Sawyer subspecies synonym

Rhamnus tomentella subsp. cuspidata (Greene) Sawyer subspecies synonym

Rhamnus tomentella subsp. crassifolia (Jeps.) Sawyer subspecies synonym

Rhamnus laurifolia Nutt. species synonym

Frangula occidentalis (Howell) Grubov species synonym

Frangula californica subsp. californica subspecies accepted

Endotropis oleifera Raf. species synonym

Rhamnus occidentalis Howell ex Greene species synonym

Frangula californica var. tomentella (Benth.) A.Gray variety synonym

Rhamnus californica subsp. ursina (Greene) C.B.Wolf subspecies synonym

Rhamnus californica subsp. tomentella (Benth.) C.B.Wolf subspecies synonym

Rhamnus californica subsp. occidentalis (Howell) C.B.Wolf subspecies synonym

Rhamnus californica var. crassifolia Jeps. variety synonym

Rhamnus tomentella Benth. species synonym

Rhamnus tomentella subsp. tomentella subspecies synonym

Rhamnus californica var. ursima (Greene) C.B.Wolf variety synonym

Rhamnus californica Eschsch. species synonym

Rhamnus pedunculata G.Nicholson species synonym

Rhamnus franguloides Willd. ex Roem. & Schult. species heterotypic synonym

Rhamnus occidentalis Howell species synonym

Rhamnus franguloides Willd. species homotypic synonym