Emerald

This emerald moss is commonly found growing in tiny clumps In bogs.
It is giant, growing up to 1.5 feet (46 cm) tall. It forms in large clumps and they overwhelm an area rapidly, and is very rigid; it struggles more than most during dry spells.
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; it does not cause many allergic reactions.