The Collaborative International Dictionary
Campanulaceous
Campanulaceous \Cam*pan`u*la"ceous\ (k[a^]m*p[a^]n`[-u]*l[=a]"sh[u^]s), a. (Bot.) Of pertaining to, or resembling, the family of plants ( Campanulace[ae]) of which Campanula is the type, and which includes the Canterbury bell, the harebell, and the Venus's looking-glass.
Wiktionary
campanulaceous
a. (context botany English) Of, relating to, or resembling the Campanulaceae, a family of plants including the harebell.