Bruce G. Baldwin is Curator of the Jepson Herbarium and Associate Professor of Integrative Biology at the University of California, Berkeley. Steve Boyd is Curator of the Herbarium, Rancho Santa Ana Botanic Garden. Barbara J. Ertter is Administrative Curator and Curator of Western North American Flora, University and Jepson Herbaria, University of California, Berkeley. Robert W. Patterson is Professor of Biology at San Francisco State University. Thomas J. Rosatti is Museum Scientist at the University and Jepson Herbaria, University of California, Berkeley. Dieter H. Wilken is Vice-President, Programs and Collections at the Santa Barbara Botanic Garden. Margriet Wetherwax is a Museum Scientist at the Jepson Herbarium.