Campanula rotundifolia ssp. gieseckiana belongs the taxonomically intricate C. rotundifolia complex that includes several subspecies and species in a circumpolar pattern (see, e.g., Hultén 1971). The variation within the complex lies in the number and shape of the flowers, and in the ploidy levels. The chromosome numbers 2n = 34 and 2n = 68 are the most common ones.
Individuals with 2n = 34 are often referred to as diploids although isoenzyme studies indicate that they are secondary diploids (Alsos et al. 2002). Campanula rotundifolia ssp. gieseckiana was described from Greenland and has 2n = 34. In Svalbard, both 2x = 34 and 51 (3x) have been found (Alsos et al. 2002, 2003). No critical morphological or genetic comparison of the Svalbard populations with the type material has been done but the characters of the Svalbard plants conform to those of Greenlandic ssp. gieseckiana.
The flower shapes vary among the few stands in Svalbard, with small, narrow flowers nearest Coles Bay and larger, broader flowers in the larger stands 3–4 km inwards Colesdalen.
These differences are consistent when grown in a phytotron. Also, individuals from the coastal populations flower two weeks earlier than individuals from the larger stand when grown in the phytotron (Alsos & Lund, pers. obs.). The stands are genetically distinct (Alsos et al. 2002). At a small location between these two, a third morphological type characterized by flowers of mainly 6, sometimes 5 or 7 fused petals with backwards curved petal lobes and short calyx lobes is found
(Alsos, pers. obs.), but this one has not been investigated in the phytotron or genetically.
Alsos, I.G., Engelskjøn, T. & Brochmann, C. 2002. Conservation genetics and population history of Betula nana, Vaccinium uliginosum, and Campanula rotundifolia in the arctic archipelago of Svalbard. – Arctic, Antarctic, and Alpine Research 34: 408–418.
Alsos, I.G., Spjelkavik, S. & Engelskjøn, T. 2003. Seed bank size and composition of Betula nana, Vaccinium uliginosum, and Campanula rotundifolia habitats in Svalbard and northern Norway. – Canadian Journal of Botany 81: 220-231.
Hultén, E. 1971. The circumpolar plants. II. Dicotyledons. – Handlingar Kungliga Svenska Vetenskaps-akademien, serie 4, 13, 1. 463 pp.
Scientific name, meaning and origin:
Campanula: Diminutiv of latin campana, bell. Name on bellspecies by Leonhard Fuchs, 1542.
rotundifolia, rotundifolius: With round leaves.
gieseckiana, gieseckianus: After the german botanist P.D.Giseke (1756 - 1796), student of Linné. See all
Campanula rotundifolia ssp. gieseckiana
|English name:||Hairbell, Bluebell|
|German name:||Rundblättrige Glockenblume|
|Norwegian name:||Arktisk blåklokke|
|Campanula gieseckiana (Vest) Cajander|
|Distribution on Svalbard:|
|Chromosome number (2n):||34|
|Main mode of pollination:|
|Source: Brochmann, C. & Steen, S.W, 1999 - Sex and genes in the flora of Svalbard|
All species of the genus Campanula:
- Campanula rotundifolia ssp. gieseckiana
- Campanula uniflora