Durio sensu lato has 30 recognised species.[1] Durio sensu stricto comprises 24 of these species. The 6 additional species included in Durio s.l. are now considered by some to comprise their own genus, Boschia.[11][3] Durio s.s. and Boschia have indistinguishable vegetative characteristics and many shared floral characteristics. The crucial difference between the two is that anther locules open by apical pores in Boschia and by longitudinal slits in Durio s.s.[13] These two genera form a clade that is sister to another genus in the tribe Durioneae, Cullenia.