Emerald

This emerald moss is commonly found blanketing tiny areas In heathlands, In damp forests, and On trees.
It is large, growing up to 6 inches (15 cm) tall. It forms in thick clumps, and is very hardy; it can easily endure being trodden on.
When mature, emerald heart-shaped capsules grow at the end of elongated, lime green sporophytes, eventually opening up during the mid-autumn to release dozens of spores.