trigger flower
noun1
Synonym of trigger plant.
- Beside one cairn he notices a little purple trigger flower, finger-tip big, and delicately, with the end of a fern, he impersonates a bee so that the pollen-laden trigger within the flower is released and swings up to strike the fern.1999, Julia Leigh, The Hunter, Faber & Faber 2012, p. 28