There were 3 illustrations found for K. Ball
Pachyphyllum sp.J.C. Mutis, Draw. Roy. Bot. Exped. Granada: t. 556 (1783)
Pachyphyllum sp.J.C. Mutis, Draw. Roy. Bot. Exped. Granada: t. 557 (1783)
Pachyphyllum sp.G.C.K. Dunsterville, L.A. Garay, Venez. Orchids Ill., vol. 6 : (1959-1972)
Pachyphyllum sp.G.C.K. Dunsterville, L.A. Garay, Venez. Orchids Ill., vol. 6 : (1959-1972)
Xylopia lukei D.M.Johnson & GoyderKew Bull., vol. 72 : p. 4, fig. 2A-G (2017) [K. Ball]
Xylopia mwasumbii D.M.JohnsonKew Bull., vol. 72 : p. 4, fig. 2H-R (2017) [K. Ball]
Xylopia tenuipetala D.M.Johnson & GoyderKew Bull., vol. 72 : p. 5, fig. 3 (2017) [K. Ball]