Robuta

https://commons.wikimedia.org/wiki/Campanula_trachelium Campanula trachelium - Wikimedia Commons campanula trachelium wikimedia commons https://plants.ces.ncsu.edu/plants/campanula-trachelium/common-name/nettle-leaved-bellflower/ Nettle-leaved Bellflower - Campanula trachelium | North Carolina Extension Gardener Plant Toolbox campanula trachelium north carolina extension gardener nettle bellflower https://plants.ces.ncsu.edu/plants/campanula-trachelium/common-name/blue-devils/ Blue Devils - Campanula trachelium | North Carolina Extension Gardener Plant Toolbox blue devils campanula trachelium north carolina extension gardener plant https://bellatlas.umn.edu/taxa/index.php?taxon=Campanula%20trachelium Minnesota Biodiversity Atlas - Campanula trachelium minnesota biodiversity atlas campanula trachelium