The only known occurrence of Campanula gelida in its natural environment is at Peter's Stones in the Pradědnature reserve, at an altitude of 1,438 metres above mean sea level, where it has to resist low temperatures, wind and snow. It grows on the southern and eastern slopes of the highest rock of Peter's Stones and in nearby grass vegetation consisting mainly of fescue, within 10 metres of the foot of the rock. The location is not accessible to the public.[2][5]
Description
Campanula gelida is very similar to its nearest relative Campanula bohemica. Miloslav Kovanda, the first botanist who described Campanula gelida in 1968, later even reclassified it as its subspecies. Recently, most botanists consider it to be an independent species again.[5]
Campanula gelida can be distinguished from Campanula bohemica especially by its rich tufts, and smaller flowers and capsules. Flowers often grow independently or in racemes consisting of not more than four flowers. Stem is not longer than 20 cm. Ground leaves, forming a rosette, stay until the plant wilts.[5]
Growth and reproduction
Campanula gelida usually grows in small fissures of rocky, acid ground. It prefers sunlit places, but some plants grow in shadow too. The species reproduces mostly vegetatively, because its possibilities of generative reproduction are very limited by the climatic conditions of its location. Flowers are produced from the middle of July until the end of August. Similarly to other bellflowers, its gynoecium develops after pollen has been set free from stamens, which prevents self-pollination.[2][5][6]
Endangered species
Although Campanula gelida is critically endangered and was on the edge of extinction in the 1970s, at present the population of the species seems (despite their small number and limited area of occurrence) to have stabilized. Current threats include skiers trespassing in the protected area and expansion of other species including Tufted Hair-grass, Red Raspberry and Hypericum maculatum.[2][6]
^Fischer, M. A.; W. Adler; K. Oswald (2005). Exkursionsflora für Österreich, Liechtenstein und Südtirol (in German). Linz: Oberösterreichisches Landesmuseum Linz. ISBN80-239-4177-1.