Emerald

This green moss is commonly found growing in small clumps On trees.
It is average-sized, growing up to 5 inches (13 cm) tall. It forms in small clumps, and is extremely frail.
When mature, emerald V-shaped capsules grow at the end of short, lime green sporophytes, eventually opening up during the early summer to release thousands of spores; it can cause severe allergic reactions.