Silverfern

This light brown and silver moss is commonly found blanketing tiny areas In moorlands, and On rotten logs.
It is giant, growing up to 1.3 feet (38 cm) tall. It forms in large clumps and they overwhelm an area rapidly, and is overwhelmingly flexible; it is very difficult to kill.
When mature, emerald oblong capsules grow at the end of long, lime green sporophytes, eventually opening up during the mid-summer to release thousands of spores; it does not cause many allergic reactions.