Emerald

This green moss is commonly found blanketing large areas In bogs, and On trees.
It is small, growing up to 1 inch (3 cm) tall. It forms in thick clumps, and is overwhelmingly rigid; it takes a lot of damage when trodden on.
When mature, emerald oval-shaped capsules grow at the end of elongated, lime green sporophytes, eventually opening up during the early autumn to release hundred of spores.