| Sorbus L. | |
| Publ. & Syn. | Excluded: Sorbus aucuparia subsp. praemorsa. |
| Notes | Sorbus is a complicated genus, especially in Europe where a few sexual diploids (2n = 34, or secondary diploids, as x = 17 is a quite high base number) are accompanied by several large, regional complexes of hybridogeneous and agamic triploids (2n = 51) and tetraploids (2n = 68) usually treated as species (agamospecies). For an early study of the complexities, see Liljefors (1953). The majority of the taxa that reach the Arctic, and for which chromosome counts are reported, are diploids and probably sexuals, the exception being the tetraploid S. groenlandica. They all belong to a widely defined S. aucuparia group. An old but thorough treatment of the North American variation is Jones (1939). |
| Chromosomes | 96-110. - Europe. - At least three reports. |
| Geography | European: ICE*. |
| Parent taxon | Rosaceae |
| Child taxa |
Sorbus anadyrensis Kom. Sorbus aucuparia L. Sorbus groenlandica (C.K. Schneid.) Á. Löve & D. Löve Sorbus sambucifolia (Cham. & Schltdl.) M. Roem. Sorbus scopulina Greene |
| PAF ID | 6417 |