In Turkey, the genus Bolanthus is represented by 10 endemic taxa. Some interesting Bolanthus specimens were collected from Afyonkarahisar province. After examining the literature and herbarium specimens, it was found that these specimens resemble Bolanthus thymoides but differ from this species by several characters. The newly collected specimens and B. thymoides were compared with each other in terms of their general morphology and seed micromorphology. By using DNA sequences of the ITS and trnL–trnF regions, phylogenetic relationships between this collected species and the other species distributed in Turkey were investigated. As a result of the evaluation of the molecular and morphological data, it was evident that the specimens collected from Afyonkarahisar represent a new species, and this new species has been named B. aziz-sancarii.