Emerald Heart Moss

This gray-green moss is commonly found blanketing large areas On rotten logs.
It is average-sized, growing up to 4 inches (10 cm) tall. It forms in small clumps and they are slow to spread and grow, and is overwhelmingly delicate; it struggles more than most during dry spells.
When mature, emerald heart-shaped capsules grow at the end of short, lime green sporophytes, eventually opening up during the early summer to release dozens of spores.