Bulbophyllum piestobulbon Schltr., plant habit, photo E.F. de Vogel, Shearman 20090204
Bulbophyllum piestobulbon Schltr., flower, oblique front view, photo E.F. de Vogel, Shearman 20090204
Bulbophyllum piestobulbon Schltr., flower analysis, J.J. Vermeulen, drawing
Bulbophyllum piestobulbon Schltr., flower analysis, J.J. Vermeulen, drawing