Emerald

This green moss is commonly found blanketing small areas In rainy mountain ranges, On rotten logs, and In moorlands.
It is large, growing up to 9 inches (23 cm) tall. It forms in small clumps are exceptionally hardy, and is very durable; it is very difficult to kill.
When mature, emerald spiral capsules grow at the end of short, lime green sporophytes, eventually opening up during the late summer to release thousands of spores; it can cause allergic reactions.