Emerald

This beige and black moss is commonly found blanketing tiny areas In rainy mountain ranges, On rotten logs, and On trees.
It is short, growing up to 2 inches (5 cm) tall. It forms in sparse patches and they overwhelm an area rapidly, and is extremely rigid; it struggles more than most during dry spells.
When mature, emerald circular capsules grow at the end of long, lime green sporophytes, eventually opening up during the late autumn to release hundred of spores; it does not cause any allergic reactions.