There was one illustrations found for Mollhausen
6 206265 Carnegiea gigantea (Engelm.) Britton & Rose [125 225941 Cereus giganteus Engelm.]Ann. Missouri Bot. Gard., vol. 57 : p. 136, t. 1 (1970) [Mollhausen]
6 206265 Carnegiea gigantea (Engelm.) Britton & Rose [125 225941 Cereus giganteus Engelm.]