Focusing on Brazilian orchid species with other related topics covered. Delfina de Araujo. Rio de Janeiro, Brazil.
Information on over 23,000 orchid species in over 850 genera. Jay Pfahl (and many others). Key West, Florida, United States.
Featuring many links to orchid-related sites as well as a classified ads section. Established 1995. Carson E. Whitlow. Adel, Iowa, United States.
Information for several genera of orchids, events, and links. Christina Boris. Rolling Meadows, Illinois, United States.
French language encyclopedia of orchids featuring classifications, a glossary, images, and the culture of many orchids. Vincent Liefooghe. France.