Emerald

This gray-green moss is commonly found growing in giant clumps In rainy mountain ranges, In damp forests, and In moorlands.
It is average-sized, growing up to 5 inches (13 cm) tall. It forms in thin clumps and can spread and grow quickly, and is very durable; it can easily endure being trodden on.
When mature, emerald triangular capsules grow at the end of long, lime green sporophytes, eventually opening up during the early autumn to release thousands of spores.