BioStor
 | Flora of Panama. Part III. Fascicle IV Paul H Allen (1949) Annals of the Missouri Botanical Garden 36: 1-132 |
 | Flora of Panama. Part III. Fascicle I Paul H Allen (1949) Annals of the Missouri Botanical Garden 36: 133-257 |
 | New or Noteworthy Orchids for the Venezuelan Flora. VII. Additions in Maxillaria from the Venezuelan Guayana German Carnevali and Ivon Ramirez (1989) Annals of the Missouri Botanical Garden 76: 374-380 |