Sigmatostalix eliae
Sigmatostalix graminea
Sigmatostalix guatemalensis
Sigmatostalix picta
Sigmatostalix sp

Smithinandia micrantha

Sobennikoffia humbertiana
Sobennikoffia robusta

Sobralia leucoxantha
Sobralia augusta
Sobralia decora
Sobralia lowii
Sobralia macrantha
Sobralia macrantha var alba

Sophronitella violacea

Sophronitis acunae
Sophronitis brevipedunculata
Sophronitis cernua
Sophronitis cernua var amarello
Sophronitis coccinea
Sophronitis coccinea -selected
Sophronitis coccinea var pygmaea
Sophronitis coccinea var rossiteriana
Sophronitis coccinea var xanthina
Sophronitis mantiqueriae
Sophronitis rosea
Sophronitis wittigiana

Spathoglottis gracilis

Sphyrarhynchus schliebenii

Stanhopea anfracta
Stanhopea connata
Stanhopea costariciensis
Stanhopea devoniensis
Stanhopea eburnea
Stanhopea graveolens
Stanhopea haseloviana
Stanhopea inodora
Stanhopea insignis
Stanhopea impressa
Stanhopea jenischiana
Stanhopea oculata
Stanhopea platytceras
Stanhopea posadae
Stanhopea pozoi
Stanhopea saccata
Stanhopea shuttleworthii
Stanhopea sp
Stnahopea tricorinis
Stanhopea tigrina
Stanhopea wardii
Stanhopea wardii -yellow
Stanhopea xytriophora

Stauropsis undulata

Stelis gemma

Stenia guttata
Stenia pallida

Stenocoryne aureo-fulva
Stenocoryne racemosa
Stenocoryne vitellina

Stenoglottis fimriata
Stenoglottis longifolia

Symphyglossum sanguineum

Rangaeris amaniensis
Rnagaeris musicola

Renanthera imschootiana
Renanthera matutina
Renanthera philippinensis

Restrepia antennifera
Restrepia cuprea
Restrepia elegans
Restrepia guttulata
Restrepia hemsleyana
Restrepia sanuinea
Restrepia sp
Restrepia sp
Restrepia sp
Restrepia sp
Restrepia striata
Restrepia xanthophthalma

Rhinerrhiza divitiflora

Rhyncholaelia digbyana
Rhyncholaelia digbyana var fimbripetala
Rhyncholaelia glauca

Rhynchostylis coelestis
Rhynchostylis coelestis -pink
Rhynchostylis gigantea
Rhynchostylis gigantea -red
Rhynchostylis gigantea var alba
Rhynchostylis retusa
Rhynchostylis retusa var gigantea

Robiquetia sp

Rodriguezia decora
Rodriguezia secunda
Rodriguezia venusta

Rodrigueziopsis eleutherosepala

Rossioglossum grande
Rossioglossum insleayi
Rossioglossum schlieperianum
Rossioglossum splendens
Rossioglossum williamsianum

Sarcochilus ceciliae
Sarcochilus ceciliae var alba
Sarcochilus falcatus
Sarcochilus fitzgeraldii
Sarcochilus hartmanii
Sarcochilus olivaceus

Scaphyglottis sp

Schlimia alpina

Schoenorchis fragrans
Schoenorchis juncifolia

Schomburgkia crispa
Schomburgkia tibicinis
Schomburgkia undulata
Schomburgkia wendlandiana

Scuticaria steelii

Sedirea japonica

Seidenfadenia mitrata

Sievekingia fimbriata
Sievekingia reichenbachiana
Sievekingia suavis