China root (茯苓)

Dried peppWolfiporia extensa (syn. Poria cocos F.A.Wolf), commonly known as hoelen, poria, tuckahoe, China root, fu ling (茯苓, pīnyīn: fúlíng), or matsuhodo, is a species of fungus in the family Polyporaceae. It is a wood-decay fungus but has a subterranean growth habit. It notably develops a large, long-lasting underground sclerotium resembling a small coconut..