Petrogeton dentatum (Thunb.) Eckl. & Zeyh. | Crassula dentata Thunb. |
Petrogeton nemorosum Eckl. & Zeyh., Enum. Pl. Afric. Austral. [Ecklon & Zeyher] 3: 292 (1837) | Crassula nemorosa (Eckl. & Zeyh.) Endl. |
Petrogeton nemorosus Eckl. & Zeyh. | Crassula nemorosa (Eckl. & Zeyh.) Endl. |
Petrogeton nivale Eckl. & Zeyh. | Crassula nemorosa (Eckl. & Zeyh.) Endl. |
Petrogeton patens Eckl. & Zeyh. | Crassula dentata Thunb. |
Petrogeton typicum Eckl. & Zeyh. | Crassula dentata Thunb. |
Petrogeton umbella (Jacq.) Eckl. & Zeyh. | Crassula umbella Jacq. |