Eastonara (Eas) = Ascocentrum x Gastrochilus x Vanda
Edeara (Edr) = Arachnis x Phalaenopsis x Renanthera x Vandopsis
Elearethusa (Elsa) = Arethusa x Eleorchis
Elecalthusa (Ecth) = Arethusa x Calopogon x Eleorchis
Eleorchis (Elo)
Elepogon (Elp) = Calopogon x Eleorchis
Eliara (Eliara) = Brassia x Oncidium x Rodriguezia
Eltroplectris (Etp)
Elythodia (Etha) = Elythranthera x Glossodia
Elythranthera (Elth)
Embreea (Emb)
Encyclia (E)
Encyleyola (Eyy) = Brassavola x Cattleya x Encyclia
Encyvola (Eyv) = Brassavola x Encyclia
Endlicherara (Edl) = Aspasia x Brassia x Miltonia x Miltoniopsis x Odontoglossum
Engkhiamara (Ekma) = Aerides x Arachnis x Ascocentrum x Renanthera x Vanda
Engsoonara (Eng) = Esmeralda x Renanthera x Vanda x Vandopsis
Ephippium (Epp)
Epibarkiella (Epbkl) = Barkeria x Epidendrum x Nageliella
Epibrassonitis (Epbns) = Brassavola x Epidendrum x Sophronitis
Epicatonia (Epctn) = Broughtonia x Cattleya x Epidendrum
Epicattleya (Epc) = Cattleya x Epidendrum
Epicyclia (Epy) = Encyclia x Epidendrum
Epidella (Epdla) = Epidendrum x Nageliella
Epidendrum (Epi)
Epidiacrium (Epdcm) = Diacrium x Epidendrum
Epierstedella (Erd) = Epidendrum x Oerstedella
Epiglottis (Epgl) = Epidendrum x Scaphyglottis
Epigoa (Epg) = Domingoa x Epidendrum
Epilaelia (Epl) = Epidendrum x Laelia
Epilaeliocattleya (Eplc) = Cattleya x Epidendrum x Laelia
Epilaeliopsis (Eplps) = Epidendrum x Laeliopsis
Epileptovola (Elva) = Brassavola x Epidendrum x Leptotes
Epimicra (Emc) = Epidendrum x Tetramicra
Epinidema (Epn) = Epidendrum x Nidema
Epiopsis (Eps) = Cattleyopsis x Epidendrum
Epipactis (Epcts)
Epiphronitis (Ephs) = Epidendrum x Sophronitis
Epipogium (Epgm)
Epistoma (Epstm) = Amblostoma x Epidendrum
Epithechea (Etc) = Epidendrum x Prosthechea
Epitonia (Eptn) = Broughtonia x Epidendrum
Eriopsis (Ess)
Ernestara (Entra) = Phalaenopsis x Renanthera x Vandopsis
Erycina (Ercn)
Eryidium (Erdm) = Erycina x Oncidium
Esmeralda (Em)
Esmeropsis (Ems) = Esmeralda x Vandopsis
Esmerstylis (Est) = Esmeralda x Rhynchostylis
Estelaara (Esta) = Brassavola x Cattleya x Epidendrum x Tetramicra
Euclades (Eucl) = Eulophia x Oeceoclades
Eulocymbidiella (Eucmla) = Cymbidiella x Eulophiella
Eulophia (Euph)
Eulophiella (Eul)
Euryangis (Eugs) = Aerangis x Eurychone
Eurychone (Echn)
Eurygraecum (Eugcm) = Angraecum x Eurychone
Eurynopsis (Eunps) = Eurychone x Phalaenopsis
Exalaria (Exa)