Emerald

This deep green and lime green moss is commonly found blanketing giant areas On rotten logs, and In rainforests.
It is average-sized, growing up to 4 inches (10 cm) tall. It forms in thick clumps and they overwhelm an area rapidly, and is slightly hardy; it can easily endure flooding and draughts.
When mature, emerald circular capsules grow at the end of short, lime green sporophytes, eventually opening up during the early summer to release millions of spores; it can cause severe allergic reactions.