Sorbus × hybrida by thrushes and waxwings, which disperse the seeds. It is a tetraploid species of hybrid origin between "S. aucuparia" (European rowan) and "S. intermedia" (Swedish whitebeam), the latter being a tetraploid triple hybrid between "S. aucuparia", "S. torminalis", and either "S. aria" or one of its close relatives. "S. intermedia" differs from "S. hybrida" in having the leaves less deeply lobed with no separate leaflets. Closely related "Sorbus meinichii" is a triploid or tetraploid species of hybrid origin between "S. hybrida" and "S. aucuparia" and differs in having the basal four to six pairs of lobes cut right to the
Berry Mountain Pond, , presumed the highest natural pond in the state of Massachusetts, is located on the ridge between Berry Mountain and Berry Hill to the north. The west side and summits of Berry Mountain are located within Hancock, Massachusetts; the east slopes are located within Pittsfield. The ridgeline continues south from Berry Mountain as Pine Mountain and Tower Mountain; it continues north as Berry Hill. Berry Mountain is bordered by West Hill to the west across the Wyomanock Creek valley. The west side of the mountain drains into Berry Pond Creek, then Wyomanock Creek, thence into Kinderhook Creek, the Hudson