(STEREO) Bulbophyllum microsphaerium Schltr., plant habit, photo P. Jongejan, collection Royal Botanic Gardens, Kew, cult. P. Jongejan 1576
(STEREO) Bulbophyllum microsphaerium Schltr., flower, oblique lateral view, photo P. Jongejan, collection Royal Botanic Gardens, Kew, cult. P. Jongejan 1576
(STEREO) Bulbophyllum microsphaerium Schltr., flower detail, centre of flower, lateral sepal and petal removed, oblique lateral view, photo P. Jongejan, collection Royal Botanic Gardens, Kew, cult. P. Jongejan 1576
Bulbophyllum microsphaerum Schltr., J.J. Vermeulen, sketch, plant habit and flower analysis, based on Schlechter 18758 (iso L)
Bulbophyllum microsphaerum Schltr., floral analysis, R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 266, fig. 1018
Bulbophyllum microsphaerum Schltr., herbarium sheet, Schlechter 18758 (isotype specimen BO)