Field Guide to the Orchids of the Serra de São José Ruy Valka Alves 1991. 148 pages. 15 x 21cm. English and Portuguese. Price: US$ 30,00 + S&H

This book is the result of more than 50 journeys done since 1985 and it has has more than black and white illustration, photos (plants in the habitat) and colored drawings. It presents description of new species and critical taxa, artificial keys and list of the species.