Malacocarpus tephracanthus K.Schum.
no HD illustration available (m1)
Malacocarpus tephracanthus K.Schum. [Zygophyllaceae]
N.L. Britton, J.N. Rose, Cact., vol. 3 : t. 20, fig. 1 (1922) [M.E. Eaton]