丹波花柱草 Trigger plant（Stylidium petiolare）

Stylidium  is a genus of dicotyledonous plants that belong to the family Stylidiaceae. Triggerplants are considered to be protocarnivorous or carnivorous because the glandular trichomes that cover the scape and flower can trap, kill, and digest small insects with protease enzymes produced by the plant. Members of the genus are most easily identified by their unique floral column, in which the stamen and style are fused. The column—also commonly called a "trigger" in this genus—typically resides beneath the plane of the flower.