Template:Vermeulen, 1993

• Vermeulen, J.J. 1993. A taxonomic revision of Bulbophyllum, sections Adelopetalum, Lepanthe, Macrouris, Pelma, Peltopus, and Uncifera (Orchidaceae). In: Orchid monographs 7 34 S., 141 Abb., 19 Tab., 6 Karten, 6 Farbtafeln, Rijksherbarium, Hortus Botanicus, Leiden. DOI: 10.1002/fedr.19941050715  
  • ISBN 90-71236-17-X
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