Jagged pain grows in small clusters and each one has a unique shape. The only thing that the shapes have in common is that they are all sharp at the top. If something steps on it they will experience a huge amount of pain and have many jagged pain lodged into their foot. The roots remain underground but the glass part breaks off allowing for a new top half to grow, every time an organism steps after getting a jagged pain stuck in its foot, the jagged pain releases a small fragment of itself, effectively using the organism to help its spread. If the organism dies from infection or something, the jagged pain then uses the corpse to make more jagged pain. No one likes the jagged pain.