Attempt at a Natural New Classification of the African Angraecoid Orchids
Katz, H. J., Simmons, J. T. 1989
A translation into English of Versuch einer natürlichen Neuordnung der afrikanischen angraekoiden Orchidaceen
by Rudolf Schlechter as published in Beihefte zum Botanischen Centralblatt, Vol XXXVI (1918), pp 62-181
Translation completed 1986 by the Publications Committee, The Australian Orchid Foundation, published hardcopy 1989 and digitised 2021. Includes introduction and genera index; 133 pages; searchable PDF.
A publication of The Australian Orchid Foundation.