He and his late wife Sylvia Sharnoff did the photographic fieldwork for Lichens of North America, published by Yale University Press in 2001. He wrote and illustrated A Field Guide to California Lichens, published by the same press in 2014. Nearing completion is his new photographic guide to the wildflowers of the Sierra Nevada with a text by Joanna Clines, Forest Botanist with the Sierra National Forest. Stephen’s photographs have been used in numerous exhibitions, magazines, and books. A website of his photographic work can be seen at http://www.sharnoffphotos.com. Copies of A Field Guide to California Lichens ($32.50 plus tax) will be available for purchase at the meeting.