Why lichens? -- Lichen biology : the basics -- Lichen reproduction -- Growth forms -- Substrates -- Additional remarks -- About the guide -- Appendix : checklist of the lichens of White Rocks open space -- Dichotomous key to White Rocks lichens
Summary:
"Extensively illustrated field guide presents detailed information and a careful examination of the lichens that occur at the ecologically important and lichenologically rich urban outcropping of sandstone known as White Rocks Nature Preserve in Boulder County, Colorado. Includes both macroscopic and microscopic features needed to identify species"--Provided by publisher.