triggerplant family

The family Stylidiaceae is a taxon of dicotyledonous flowering plants. It consists of five genera with over 240 species, most of which are endemic to Australia and New Zealand. Members of Stylidiaceae are typically grass-like herbs or small shrubs and can be perennials or annuals. Most species are free standing or self-supporting, though a few can be climbing or scrambling (Stylidium scandens uses leaf tips recurved into hooks to climb).

The pollination mechanisms of Stylidium and Levenhookia are as follows: In Stylidium the floral column, which consists of the fused stamen and style, springs violently from one side (usually under the flower) when triggered. This deposits the pollen on a visiting insect. In Levenhookia, however, the column is immobile, but the hooded labellum is triggered and sheds pollen.