Emerald

This lime green moss is commonly found growing in giant clumps In damp forests.
It is short, growing up to 1 inch (3 cm) tall. It forms in large clumps and they spread and grow quickly, and is slightly frail.
When mature, emerald spiral capsules grow at the end of short, lime green sporophytes, eventually opening up during the late summer to release hundred of spores; it can cause severe allergic reactions.