Lichens are a unique pairing of fungi and algae found everywhere around us. Naturalist Tom Walker has been studying Cape Cod lichens carefully over the past few years and will share information about the life history of lichens, how to distinguish common species from each other, and how they fit into the larger ecosystem. As a Cape Cod Naturalist, he has developed considerable skills identifying birds, trees, shrubs, wildflowers, ferns, lichens, fungi, and to a lesser degree, mosses, and liverworts.