Sorbus torminalis
It is a sexually reproducing diploid species that forms diploid and polyploid hybrids with members of subgenus "Aria" (whitebeams). A number of often very localised stable apomictic polyploid species of ultimately hybrid origin between "Sorbus torminalis" and various species in the subgenus "Aria" occur in Europe, including "Sorbus latifolia" (service tree of Fontainebleau), and "Sorbus bristoliensis" (Bristol whitebeam).