Verbascum albidiflorum Ranjbar & Nouri (Scrophulariaceae) is described and illustrated as a new species of V. [sect. Bothrosperma Murb.] subsect. Singuliflora Murb. from Kermanshah Province, W Iran. It is morphologically most similar to V. alceoides Boiss. & Hausskn. and the two species are compared with respect to gross morphology, leaf anatomy and pollen morphology. The chromosome number 2n = 38 is reported for the first time in V. albidiflorum and 2n = 48 is reported in V. alceoides, both from Kermanshah Province, Iran.