Pilea Pumilla is commonly referred to as the Artillery Plant. This plant is unique due to the fact that it has tiny flowers that shoot out pollen when disturbed, which mimic tiny explosions. Other synonyms for Pilea Pumilla include rockweed, clearweed, and clearweed nettle. Clearweed comes from the fact that the plant is translucent and appears clear. Rockweed is used due to the plants' ability to grow on rocks. Clearweed nettle comes from the fact that the plant has fine hairs on its stem and is a close relative of the nettle family. Despite its various names, Pilea Pumilla is a popular houseplant that is easy to care for and adds an interesting dynamic to any collection.