Crossword clue: a large genus of plants bearing bell-shaped flowers, often of great beauty; -- also called bellflower.

The most common answer is campanula (9 letters).

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

campanula 9 letters web-def

any of various plants of the genus Campanula having blue or white bell-shaped flowers