Introduction to Lichens on Alta Vista Trail

What are lichens? How did lichens evolve and how diverse are they? Where do lichens grow in California? Join Tom Carlberg (California Lichen Society) and Susie Bennett (San Mateo County Natural Resource Management Specialist) to answer these questions and many more through presentation and field observations on Alta Vista Trail!

Editor's Note: If you wish to take this hike/class, please verify the start location.  The website shows the start in Fort Mason, but the description says the hike is in San Mateo County.