Campanula rotundifolia L., syn: Campanula dubia A. DC., Campanula gieseckiana Vest ex Schult., Campanula petiolata A. DC., Campanula groenlandica BerlinEN: Harebell, Bluebell Bellflower, DE: Rundblttrige GlochenblumeSlo.: okroglolistna zvonicaDat.: June 13. 2019Lat.: 46.359816 Long.: 13.703358Code: Bot_1213/2019_DSC07695Habitat: mixed wood edge; almost flat terrain completely burnt down two years ago in a wooden building fire; calcareous, skeletal ground, shallow soil layer; partly sunny and dry place; elevation 585 m (1.920 feet); average precipitations ~ 3.000 mm/year, average temperature 7-9 deg C, alpine phytogeographical region. Substratum: soil.Place: Lower Trenta valley, between villages Soa and Trenta, right bank of river Soa, 'Na Melu' place; near cottage Trenta 2a, East Julian Alps, Posoje, Slovenia EC.Comment: Campanula rotundifolia is a very beautiful, widespread, from Greenland to south Europe, and probably the most common species among all bellflowers of Slovenia. It is a Eurasian North American circumpolar boreo-temperate plant common on all kind of preferably dry grassland, wood edges, light woods and bushland, roadsides from plains to subalpine elevations. It grows on both acid and alkaline sites. One can recognize it by its small roundish ground leaves (see picture 14.), which are completely different from usually much more abundant stem leaves. The ground leaves are often inconspicuous, sometimes almost absent, so a careful observation is required. The plant is very variable. To make determinations more difficult, there exist other bellflower species, which are quite similar and also have small roundish ground leaves and differently shaped stem leaves. Such are for example Campanula scheushzeri and Campanula carnica ssp. carnica in my environment. Therefore, proper determination of them is not always trivial. Ref.: 2 considers the species as insufficiently studied in Slovenia.Ref.:(1) M.A. Fischer, W. Adler, K. Oswald, Exkursionsflora fr sterreich, Liechtenstein und Sdtirol, LO Landesmuseen, Linz, Austria (2005), p 851.(2) A. Martini et all., Mala Flora Slovenije (Flora of Slovenia - Key) (in Slovenian), Tehnina Zaloba Slovenije (2007), p 629. (3) D. Aeschimann, K. Lauber, D.M. Moser, J.P. Theurillat, Flora Alpina, Vol. 2., Haupt (2004), p 322.