Ruud de Block:
Dioscorea elephantipes - Würzburg
Ruud de Block:
Tacca plantaginea - BG Berlijn
Ruud de Block:
Dioscorea elephantipes - Olifantsvoet - Hortus Botanicus Amsterdam
Ruud de Block:
Dioscorea elephantipes - BG La Concepcion - Malaga-001
Ruud de Block:
Dioscorea elephantipes - BG La Concepcion - Malaga-003
Ruud de Block:
Dioscorea elephantipes - BG La Concepcion - Malaga
Ruud de Block:
Dioscorea discolor - BG Meise
Ruud de Block:
Dioscorea balcanica Košanin - BG Berlin 230511-1
Ruud de Block:
Dioscorea balcanica Košanin - BG Berlin 230511-2
Ruud de Block:
Dioscorea balcanica Košanin - BG Berlin 230511-3