- Xylaria, genus Xylaria - type genus of Xylariaceae; fungi with perithecia in the upper part of erect black woody stromata
--1 is a kind of fungus genus
--1 is a member of Xylariaceae, family Xylariaceae
--1 has members:black root rot fungus, Xylaria mali; dead-man's-fingers, dead-men's-fingers, Xylaria polymorpha