Lichens

An illustrated introduction to the lichens with information on their ecology and reproduction.

A lichen is a combination of two organisms which live together intimately. Information on their fossil record, life history and ecology, systematics and morphology.

Photographs of Acolium hawaiiense, Acroscyphus sphaerophoroides, Anaptychia leucomelos, Bacidia medialis, Bryoria furcellata, B. smithii, Buellia aeruginascens, B. proximata, B. pruinosa, B. tincta, Caloplaca erythrantha and Teloschistes flavicans.

The Forest Inventory and Analysis service in the United States monitors the lichen community in order to assess the impact of air pollution on forest health.