Dimelaena is a genus of lichenized fungi in the family Caliciaceae.

[1]: 260  Members of the genus are commonly called mountain lichens,[2] or moonglow lichens.

[1]: 260  They are placodioid crustose lichens, ranging in form from rimose to areolate.

[1] The genus has a widespread distribution and contains eight species.

This Caliciales-related article is a stub.