Emerald

This gray-green moss is commonly found blanketing tiny areas In heathlands, On rotten logs, and In bogs.
It is modest-sized, growing up to 3 inches (8 cm) tall. It forms in extensive patches are slow to spread and grow, and is slightly light.
When mature, emerald shield-shaped capsules grow at the end of long, lime green sporophytes, eventually opening up during the early autumn to release millions of spores.