A taxonomic revision of the continental African Bulbophyllinae / J.J. Vermeulen ; drawings by the authorRevisions in Coelogyninae (Orchidaceae) III : the genus Pholidota / E.F. de Vogel ; drawings by J.J. VermeulenA revision of the Indian species of Oberonia (Orchidaceae) / R. Ansari & N.P. Balakrishnan ; drawings by K. SivanandanThe genus Nervilia (orchidaceae) in Africa and the Arabian Peninsula / B. PetterssonRevisions in Coelogyninae (Orchidaceae) IV : Coelogyne section Tomentosae / E.F. de Vogel ; drawings by C.L. Chan and A. Satiri $ A revision of the orchid genera Ania, Hancockia, Mischobulbum, and Tainia / H. Turner ; drawings by M. NakajimaA taxonomic revision of Bulbophyllum, sections Adelopetalum, Lepanthanthe, Macrouris, Pelma, Peltopus, and Uncifera (Orchidaceae) / J.J. VermeulenRevision of Agrostophyllum section Appendiculopsis, with notes on the systematics of Agrostophyllum / A. Schuiteman $ Revision of the genus Mediocalcar / A. Schuiteman $ Revision of the genus Bromheadia / J. Kruizinga, H.J. van Scheindeen & E.F. de Vogel $ Taxonomic revision of Acanthephippium / S.A. Thomas $ Revision of the orchid genera Chrysoglossum, Collabium, Diglyphosa, and Pilophyllum (subtribe Collabiinae) / W. van der Burgh & E.F. de VogelA taxonomic revision of the genus Acriopsis Reinwardt ex Blume (Acriopsidinae, Orchidaceae) / M.E. Minderhoud & E.F. de Vogel ; Revisions in Coelogyninae (Orchidaceae) II. The genera Bracisepalum, Chelonistele, Entomophobia, Geesinkorchis and Nabaluia / E.F. de Vogel ; drawings by J.J. Vermeulen
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Vanaf Vol. 4 uitg.: Leiden : Rijksherbarium/Hortus Botanicus
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Orchid monographs
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Orchid monographs