Campanula groenlandica Berlin

Обсуждение синонима / Таксоны / Форум

The infraspecific variation is appreciable and treated in different ways in different traditions. In North America, only diploid counts have been reported from the Arctic. In Greenland, Böcher et al. (1978) recognised the plants as C. gieseckiana with two races, the widely distributed diploid (2n = 34) as subsp. gieseckiana and the more restricted southern and eastern tetraploid (2n = 68) as subsp. groenlandica. In Fennoscandia, tetraploids occur everywhere except for the northeastern corner. Both lowland plants with many and comparatively small flowers and alpine plants with often large single flowers are tetraploid, the latter sometimes named as C. groenlandica. There seems to be no discontinuity in the morphological patterns. In the northeastern (arctic) corner diploids are dominant or perhaps exclusive (see Croff 1978), with the morphological pattern of the tetraploid mountain plants. Diploids also occur in the southeastern (Swedish and Finnish) lowlands, with the morphological pattern of the tetraploid lowland plants. The few Svalbard plants that have been counted are diploid and resemble the Greenland and northeastern Fennoscandian diploids. It seems impossible, at least in the Nordic area, to recognise diploids and tetraploids, or mountain/tundra and lowland plants, as separate taxa. Hexaploids do not seem to reach the Arctic (Elven et al. 2003).