The following species are recognised in the genus Sorbus , many of which are called rowans or mountain-ashes: [1] This list follows a narrow definition of genus Sorbus; species that have been moved to the genera Aria , Torminalis , Cormus , Chamaemespilus, Hedlundia , Scandosorbus , Karpatiosorbus , Mayovskya and Normeyera are not listed.