Ron Butler: Lichens

This presentation for Western Maine Audubon will provide a general overview of the evolution, morphology, and physiology of lichens. The ecological role of lichens in terrestrial ecosystems with be discussed, and the uses
of lichens by animals (including humans) will be explored. A brief survey of some common Maine foliose, fruticose, squamulose, and crustose lichens will be presented, and some key references for lichen identification will be highlighted.
Dr. Ron Butler retired in 2021 as Emeritus Professor at the University of Maine at Farmington after 40 years of teaching.