Zygocaste in Orch. Rev. 54: 41, 1946 
Zygopetalum X Lycaste 
Ist hybr.: Z. Van Belle 
Parentage: Lycaste virginalis X Zygopetalum Mackayi 
Zygocella nom. hybr. gen. nov. 
Zygopetalum X Mendoncella 
ist hybr.: Z. Maz-Jorisii (as Zygopetalum Max-Jorisii) 
Parentage: Zygopetalum maxillare * Mendoncella Jorisiana 
Zygocidium in Hansen, Orch. Hybr. 244, 1895 
Zygopetalum X Oncidium 
Ist hybr. : not yet reported 
Zygocolax in Gard. Chron. ser. 3, 1: 756, 1887 
Zygopetalum X Colax 
Ist hybr.: Z. leopardinus (as Zygopetalum leopardinum) 
Parentage: Colax jugosus X Zygopetalum maczillare 
Ill.: in Gard. Mag. 43: 121, f., 1900 
Syn.: Zygolax in Hansen, Orch. Hybr. 244, 1895 
Zygodendrum in Hansen, Orch. Hybr. 244, 1895 
Zygopetalum X Epidendrum 
Ist hybr.: not yet reported 
Zygolax in Hansen, Orch. Hybr. 244, 1895 
Observation: See Zygocolax. 
Zygomena in Die Natuerl. PHanzenfam. Erg.-heft II, 92, 1908 
Zygopetalum X Menadenium 
Ist hybr.: Z. Roeblingiana (as Zygopetalum Roeblingianum) 
Parentage: Zygopetalum maxillare X Menadenium labiosum 
Ill.: in Gard. Chron. ser. 3, 34: 227, f. 93, 1903 
Zygonisia in Gard. Chron. ser. 3, 31: 443, 1902 
Zygopetalum X Aganisia 
Ist hybr. : not yet reported 
Observation: For the hybrids Zygonisia Rolfeana and Zygonisia 
Sanderi see Zygostylis. 
Zygorhyncha in Gartenfl. 85: 254, 1936 
Zygopetalum X Chondrorhyncha 
Ist hybr.: Z. Fletcheri (as Chondropetalum F/letcheri) 
Parentage: Zygopetalum Mackayi X Chondrorhyncha Chestertonii 
Ill. : in Gard. Chron. ser. 3, 45: 9, f. 12, 1909 
Observation: This is a very doubtful hybrid. 
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