Rafinesqueara (Raf) = Cattleya x Epidendrum x Laelia x Oerstedella
Raganara (Rgn) = Renanthera x Trichoglottis x Vanda
Ramasamyara (Rmsya) = Arachnis x Rhynchostylis x Vanda
Rangaeris (Rgs)
Rebeccaara (Reb) = Cattleya x Encyclia x Laelia x Prosthechea x Schomburgkia
Recchara (Recc) = Brassavola x Cattleya x Laelia x Schomburgkia
Rehfieldara (Rfda) = Ada x Odontoglossum x Oncidium
Reichara (Rec) = Aspasia x Miltonia x Miltoniopsis x Oncidium
Renachilus (Rcl) = Renanthera x Staurochilus
Renades (Rnds) = Aerides x Renanthera
Renafinanda (Rfnda) = Neofinetia x Renanthera x Vanda
Renaglottis (Rngl) = Renanthera x Trichoglottis
Renancentrum (Rnctm) = Ascocentrum x Renanthera
Renanetia (Rnet) = Neofinetia x Renanthera
Renanopsis (Rnps) = Renanthera x Vandopsis
Renanparadopsis (Rpd) = Paraphalaenopsis x Renanthera x Vandopsis
Renanstylis (Rnst) = Renanthera x Rhynchostylis
Renantanda (Rntda) = Renanthera x Vanda
Renanthera (Ren)
Renanthoceras (Rena) = Pteroceras x Renanthera
Renanthoglossum (Rngm) = Ascoglossum x Renanthera
Renanthopsis (Rnthps) = Phalaenopsis x Renanthera
Restrepia (Rstp)
Rhinerrhiza (Rhin)
Rhinochilus (Rhincs) = Rhinerrhiza x Sarcochilus
Rhomboda (Rhm)
Rhynarthron (Rrt) = Caularthron x Rhyncholaelia
Rhynburgkia (Rbg) = Rhyncholdelia x Schomburgkia
Rhyncada (Rya) = Ada x Rhynchostele
Rhyncanthe (Ryn) = Guarianthe x Rhyncholaelia
Rhynchocentrum (Rhctm) = Ascocentrum x Rhynchostylis
Rhynchodendrum (Rdd) = Epidendrum x Rhyncholaelia
Rhynchodenia (Rcn) = Rhynchostylis x Seidenfadenia
Rhynchodirea (Ryd) = Rhynchostylis x Sedirea
Rhynchofadanda (Rfd) = Rhynchostylis x Seidenfadenia x Vanda
Rhyncholaelia (Rl)
Rhyncholaeliocattleya (Rlc) = Cattleya x Rhyncholaelia
Rhynchonia (Rnc) = Miltonia x Rhynchostele
Rhynchonopsis (Rhnps) = Phalaenopsis x Rhynchostylis
Rhynchopera (Rnp)
Rhynchorides (Rhrds) = Aerides x Rhynchostylis
Rhynchostele (Rst)
Rhynchostylis (Rhy)
Rhynchovanda (Rhv) = Rhynchostylis x Vanda
Rhynchumnia (Rcm) = Rhynchostele x Tolumnia
Rhyncyclia (Rcy) = Encyclia x Rhyncholaelia
Rhyndiranda (Rdn) = Rhynchostylis x Sedirea x Vanda
Rhyndoropsis (Rhdps) = Doritis x Phalaenopsis x Rhynchostylis
Rhynitanthe (Rtt) = Guarianthe x Rhyncholaelia x Sophronitis
Rhynitis (Rhn) = Rhyncholaelia x Sophronitis
Rhynopsirea (Rns) = Rhynchostylis x Sedirea x Vandopsis
Rhyntonossum (Rys) = Miltonia x Odontoglossum x Rhynchostele
Rhytoniglossum (Rtg) = Miltoniopsis x Odontoglossum x Rhynchostele
Richardmizutaara (Rcmza) = Ascocentrum x Phalaenopsis x Vandopsis
Richardsonara (Rchna) = Aspasia x Odontoglossum x Oncidium
Ridleyara (Ridl) = Arachnis x Trichoglottis x Vanda
Robifinetia (Rbf) = Neofinetia x Robiquetia
Robinara (Rbnra) = Aerides x Ascocentrum x Renanthera x Vanda
Robinstevensara (Rsv) = Cochleanthes x Promenaea x Zygopetalum
Robiquetia (Rbq)
Robostylis (Rbst) = Rhynchostylis x Robiquetia
Roccaforteara (Rcfta) = Aspasia x Brassia x Cochlioda x Odontoglossum
Rodrassia (Rdssa) = Brassia x Rodriguezia
Rodrettia (Rdtta) = Comparettia x Rodriguezia
Rodrettiopsis (Rdtps) = Comparettia x Ionopsis x Rodriguezia
Rodrichilus (Rdchs) = Leochilus x Rodriguezia
Rodricidium (Rdcm) = Oncidium x Rodriguezia
Rodridenia (Rden) = Macradenia x Rodriguezia
Rodriglossum (Rdgm) = Odontoglossum x Rodriguezia
Rodriguezia (Rdza)
Rodrigueziella (Rdzlla)
Rodriopsis (Rodps) = Ionopsis x Rodriguezia
Rodritonia (Rdtna) = Miltonia x Rodriguezia
Rodrumnia (Rrm) = Rodriguezia x Tolumnia
Roellkeara (Rlk) = Aganisia x Bollea x Zygopetalum
Rohrlara (Rhla) = Ada x Aspasia x Brassia
Rolfeara (Rolf) = Brassavola x Cattleya x Sophronitis
Ronmaunderara (Ron) = Baptistonia x Brassia x Odontoglossum x Oncidium
Ronnyara (Rnya) = Aerides x Ascocentrum x Rhynchostylis x Vanda
Rosakirschara (Rskra) = Ascocentrum x Neofinetia x Renanthera
Roseara (Rsra) = Doritis x Kingiella x Phalaenopsis x Renanthera
Rossioglossum (Ros)
Rothara (Roth) = Brassavola x Cattleya x Epidendrum x Laelia x Sophronitis
Rotorara (Rtra) = Bollea x Cochleanthes x Kefersteinia
Rubellia (Rbl)
Rudolfiella (Rud)
Ruizara (Ruz) = Brassia x Miltonia x Miltoniopsis x Odontoglossum
Rumrillara (Rlla) = Ascocentrum x Neofinetia x Rhynchostylis
Rundleara (Run) = Paraphalaenopsis x Renanthera x Rhynchostylis
Ruppara (Rppa) = Gomesa x Odontoglossum x Oncidium
Rynochlioglossum (Rcg) = Cochlioda x Odontoglossum x Rhynchostele