Triggerplants (genus Stylidium), and their smaller but similar cousins the styleworts (genus Levenhookia), come from the family Stylidiaceae. Almost all species are endemic to Australia, though a few can be found in areas to its north. They are named for their resettable, excitable pollination mechanism. In the flowers above, you can see the flowers of Stylidium bulbiferum, the Circus Triggerplant, from Western Australia. All three flowers have their triggers cocked back, waiting for an insect to arrive to drink nectar. The jostling of the insect sets off the trigger, which then strikes the insect, covering it with pollen. The insect then moves to another flower, this one ready to pick up pollen from a visitor, completing pollination. Triggerplants are highly specific in where they place their pollen, and many species can share the same pollinating insect at the same time without any hybridization occurring. Some pollen-coated insects can be seen by following the "Insects on Triggerplants" link.
Triggerplants also have small, sticky hairs, most just below the flowers and on the backs of flower parts. These can trap small insects, and recent evidence shows that that triggerplants can digest these trapped prey. This makes triggerplants at least subcarnivorous, and possibly fully carnivorous if more data can be found.