= Dendromecon agnina Greene; Pittonia 5: 299 (1903)
= Dendromecon bolanderi Fedde; Repert. Spec. Nov. Regni Veg. 3: 245 (1907)
= Dendromecon brandegeei Fedde; Repert. Spec. Nov. Regni Veg. 3: 246 (1907)
= Dendromecon caesia Greene; Pittonia 5: 303 (1903)
= Dendromecon caudata Greene; Pittonia 5: 298 (1903)
= Dendromecon densifolia Greene; Pittonia 5: 304 (1903)
= Dendromecon elliptica Greene; Pittonia 5: 300 (1903)
= Dendromecon fastigiata Greene; Pittonia 5: 298 (1903)
= Dendromecon herbacea Greene; Pittonia 5: 303 (1903)
= Dendromecon leiophylla Greene; Pittonia 5: 302 (1903)
= Dendromecon myrtifolia Fedde; Repert. Spec. Nov. Regni Veg. 3: 245 (1907)
= Dendromecon pallida Greene; Pittonia 5: 301 (1903)
= Dendromecon piercei M.E.Jones; Contr. W. Bot. 15: 148 (1929)
= Dendromecon pumila Greene; Pittonia 5: 302 (1903)
= Dendromecon quercetorum Greene; Pittonia 5: 301 (1903)
= Dendromecon saligna Greene; Pittonia 5: 300 (1903)