Most Popular Books
- Field Guide to the Orchids of Costa Rica and Panama (Comstock Book)
- Identification Manual for Wetland Plant Species of Florida (SP-35)
- Phylogeny and Classification of the Orchid Family
- ORCHIDS OF PANAMA. A Facsimile Reprint of the Orchidaeceae, FLORA OF PANAMA. Includes a Checklist of the Orchids of Panama as Known Today. Monographs in Systematic Botany Volume 4.
- The Genus Encyclia in Mexico
