Squice

Squice (veternosusbos) are a genus of gourd descended from squirting cucumbers. They are epiphytic and grow on mountainsides on the west coast of the US. Their fruits measure in at 7 inches in length. 

When the spring rains hit the California savanna, the squice are prepared. Their roots have small hairs to catch the humidity and runoff. Some of the water is used by the leaves and flower but once they get pollinated, most of the water goes to the fruit. 

Flesh cells absorb lots of water and create pressure on the seeds inside. Once the dry season returns, the stem dries out and the pressure builds which causes the fruit to blow. The fruit, once released spew out large cubic seeds coated in a thick slime. The slime sticks the seed to the bare rock with the seed geometry ensuring it doesn't roll down the mountain.