https://etc.usf.edu/clipart/81900/81913/81913_campanula_gl.htm
Flower-Spike of Campanula Glomerata | ClipArt ETC
Campanula glomerata are a double flowered variety. The flowers are bluish-violet or white. The flowers are funnel shaped and grow clustered together.
campanula glomerataflowerspikeclipartetc
https://plants.ces.ncsu.edu/plants/campanula-glomerata/
Campanula glomerata (Bellflower, Clustered Bellflower, Danesblood, Dane's Blood) | North Carolina...
campanula glomeratabellflowerclustereddaneblood