Which sundew uses snap-tentacles to catapult prey onto sticky tentacles?

Drosera glanduligera uses snap-tentacles to catapult prey onto sticky tentacles.

This Australian sundew combines two trapping mechanisms on one leaf. Sticky glandular tentacles occupy the centre, while touch-sensitive, non-sticky snap-tentacles line the margins. When an insect contacts a marginal tentacle, it bends rapidly inward and launches the prey toward the glue-covered centre.

The catapulting movement is exceptionally fast for a plant. Once the prey lands among the sticky tentacles, the central glands hold it and begin the normal sundew process of digestion. The leaf’s concave shape helps keep the captured animal in the feeding zone. After a snap-tentacle fires, its movement cannot simply be repeated, so the plant must grow new functional tissue for future traps.

Drosera glanduligera is also called the pimpernel or scarlet sundew. It is an ephemeral annual that grows during Australia’s cooler season and flowers from August to November. It is often confused with other sundews, including D. burmannii, whose marginal tentacles also move rapidly but do not use the same distinctive catapulting arrangement.