Marsh Spiral Moss

This green and subtle yellow moss is commonly found blanketing small areas In marshes.
It is large, growing up to 6 inches (15 cm) tall. It forms in extensive patches, and is overwhelmingly tough; it can easily endure being trodden on.
When mature, emerald spiral capsules grow at the end of short, lime green sporophytes, eventually opening up during the mid-autumn to release thousands of spores; it does not cause any allergic reactions.