The stone ear is born on the exposed rock, especially in the siliceous rock. Distributed in Heilongjiang, Jilin, Zhejiang, Anhui, Jiangxi, Hubei, Tibet and other places.
Shi Er, also known as stone fungus, rock mushrooms, umbilical cord clothing, stone wall flower, generally grows in the cliffs shady and wet stone cracks, and thus the wild is relatively rare, because of the difficulty of picking. Rock fungus looks like black fungus and has a similar texture, though it is thinner and crisper. Put a little in soup and stew, and the dish will become much more flavorful.