Query: what are Dioscoreaceae that are not Dioscorea?
Domain: plants
Relevant documents:
Tacca chantrieri
Tacca palmata
Tacca leontopetaloides
Trichopus zeylanicus
Trichopus
Stenomeris
Rajania
Tacca integrifolia
Tacca
Tacca ankaranensis
Tacca bibracteata
Dioscoreaceae
Tacca ampliplacenta
Tacca maculata