1986 Bulbophyllum saltatorium var. saltatorium Bulbophyllum salmoneum Aver. & J.J.Verm. (2012) Bulbophyllum sambiranense Jum. & H.Perrier 1912 Bulbophyllum samoanum Schltr. 1911: Samoan Bulbophyllum Bulbophyllum sanderianum Rolfe 1893 Bulbophyllum sandersonii (Hook.f.) Rchb.f. 1878 Bulbophyllum sandersonii subsp. sandersonii Bulbophyllum sandersonii subsp. stenopetalum (Kraenzl.) J.J.Verm. 1986 Bulbophyllum sandrangatense Bosser 1965 Bulbophyllum sangae Schltr. 1905 Bulbophyllum sanguineomaculatum Ridl. (1896) Bulbophyllum sanguineopunctatum Seidenf. & A.D.Kerr (1973 publ. 1974) Bulbophyllum sanguineum H.Perrier 1937 Bulbophyllum sanitii Seidenf. 1970 Bulbophyllum sannio J.J.Verm. (2008) Bulbophyllum santoense J.J.Verm. 1993 Bulbophyllum santosii Ames 1915: Santos' Bulbophyllum Bulbophyllum sapphirinum Ames 1915 Bulbophyllum sarasinorum Schltr. 1925 Bulbophyllum sarawaketense (P.Royen) J.J.Verm., Schuit. & de Vogel (2014) Bulbophyllum sarcanthiforme Ridl. 1916 Bulbophyllum sarcochilum J.J.Verm. & P.O'Byrne (2008) Bulbophyllum sarcodanthum Schltr. 1913 Bulbophyllum sarcophylloides Garay, Hamer & Siegerist 1994: Sarcophyllum-like Bulbophyllum Bulbophyllum sarcophyllum (King & Pantl.) J.J.Sm. 1912: Fleshy Red-leafed Bulbophyllum Bulbophyllum sarcorhachis Schltr. 1918 Bulbophyllum sarcorhachis var. befaonense (Schltr.) H.Perrier 1937 Bulbophyllum sarcorhachis var. flavomarginatum H.Perrier ex Hermans (2007) Bulbophyllum sarcorhachis var. sarcorhachis Bulbophyllum sarcoscapum Teijsm. & Binn. 1867 Bulbophyllum saronae Garay 1999 Bulbophyllum sasakii (Hayata) J.J.Verm., Schuit. & de Vogel (2014) Bulbophyllum sauguetiense Schltr. 1913 Bulbophyllum saurocephalum Rchb.f. 1886 Bulbophyllum saurocephalum subsp. oncoglossum W.Suarez (2011) Bulbophyllum saurocephalum subsp. saurocephalum Bulbophyllum savaiense Schltr. 1911 Bulbophyllum savaiense subsp. gorumense (Schltr.) J.J.Verm. 1993 Bulbophyllum savaiense subsp. savaiense Bulbophyllum savaiense subsp. subcubicum (J.J.Sm.) J.J.Verm. 1993 Bulbophyllum sawiense J.J.Sm. 1912 Bulbophyllum scaberulum (Rolfe) Bolus 1889: Slightly-roughened Bulbophyllum Bulbophyllum scaberulum var. crotalicaudatum J.J.Verm. 1987 Bulbophyllum scaberulum var. fuerstenbergianum (De Wild.) J.J.Verm. 1986 Bulbophyllum scaberulum var. scaberulum Bulbophyllum scabratum Rchb.f. in W.G.Walpers 1861 Bulbophyllum scabrum J.J.Verm. & A.L.Lamb 1988 Bulbophyllum scaphiforme J.J.Verm. 2002 Bulbophyllum scaphioglossum J.J.Verm. & Rysy, (2014) Bulbophyllum scaphosepalum Ridl. 1916 Bulbophyllum scariosum Summerh. 1953 Bulbophyllum sceliphron J.J.Verm. 1991 Bulbophyllum schaiblei Cootes & Naive (2017) Bulbophyllum schefferi (Kuntze) Schltr. 1915 Bulbophyllum schillerianum Rchb.f. 1860: Schiller's Bulbophyllum Bulbophyllum schimperianum Kraenzl. 1902 Bulbophyllum schinzianum Kraenzl. 1899 Bulbophyllum schinzianum var. irigaleae (P.J.Cribb & Pérez-Vera) J.J.Verm. 1987 Bulbophyllum schinzianum var. phaeopogon (Schltr.) J.J.Verm. 1986 Bulbophyllum schinzianum var. schinzianum Bulbophyllum schistopetalum Schltr. in K.M.Schumann & C.A.G.Lauterbach 1905 Bulbophyllum schizopetalum L.O.Williams 1946 Bulbophyllum schmidii Garay 1999: Schmid's Bulbophyllum Bulbophyllum schmidtianum Rchb.f. 1865 Bulbophyllum schuitemanii J.J.Verm. (2008) Bulbophyllum schwarzii Sieder & Kiehn (2010 publ. 2011). Bulbophyllum sciaphile Bosser 1965 Bulbophyllum scintilla Ridl. 1908 Bulbophyllum scopa J.J.Verm. 1990 Bulbophyllum scopula Schltr. 1913 Bulbophyllum scorpio J.J.Verm. (2008) Bulbophyllum scrobiculilabre J.J.Sm. 1914 Bulbophyllum scutiferum J.J.Verm. 1993 Bulbophyllum scyphochilus Schltr. 1912 Bulbophyllum seabrense Campacci (2008) Bulbophyllum secundum Hook.f. 1890 Bulbophyllum