Polystachya

Blog da Bete Orquideas
Photos, descriptions, and cultivation information for many orchid species. Elisabete Delfini. Americana, São Paulo, Brazil.

Van Rooyen Orchids
Large selection of species and hybrids available. Photo gallery. Angela and Roelie van Rooyen. White River, South Africa.

Orchids of Central Africa
Collaborative work carried out in Central Africa and Belgium by Vincent Droissart, Réginald Dessi, Tariq Stévart, Bonaventure Sonké, Murielle Simo, Daniel Geerinck, and others. Online photograph database and taxonomic keys are featured on the site.