1. Department of Biology, San Diego State University, San Diego, CA 92182
2. California Native Plant Society, Orange County, P.O. Box 54891, Irvine, CA 92619
3. Research Associate, California Botanic Garden, 1500 N. College Avenue, Claremont, CA 91711
4. San Diego Natural History Museum, P.O. Box 121390, San Diego, CA 92112
5. Royal Botanic Gardens Victoria, Private Bag 2000, Birdwood Avenue, South Yarra Victoria 3141, Australia
6. The South African National Biodiversity Institute (SANBI), Private Bag X101, Silverton 0184, South Africa