F.Muell. & Kraenzl. Dendrobium spinuliferum Ormerod Dendrobium spurium (Blume) J.J.Sm. Dendrobium steatoglossum Rchb.f. Dendrobium steinii J.J.Sm. Dendrobium stelidiiferum J.J.Sm. Dendrobium stella-silvae (Loher & Kraenzl.) Ames Dendrobium stellare Dauncey Dendrobium stelliferum J.J.Sm. Dendrobium stenocentrum Schltr. Dendrobium stenoglossum Gagnep. Dendrobium stenophyllum Schltr. Dendrobium stenophytoides (P.O'Byrne & J.J.Verm.) Schuit. & Peter B.Adams Dendrobium stenophyton Schltr. Dendrobium stenopterum (Rchb.f.) Chadim Dendrobium stictanthum Schltr. Dendrobium stipiticola Ormerod Dendrobium stockelbuschii Schettler Dendrobium stockeri T.Yukawa Dendrobium stolleanum Schltr. Dendrobium stratiotes Rchb.f. Dendrobium straussianum Schltr. Dendrobium strebloceras Rchb.f. Dendrobium strepsiceros J.J.Sm. Dendrobium striatellum Carr Dendrobium striatiflorum J.J.Sm. Dendrobium stricticalcarum W.Suarez & Cootes Dendrobium striolatum Rchb.f. – streaked rock orchid Dendrobium strongylanthum Rchb.f. Dendrobium strongyloflorum J.J.Wood Dendrobium stuposum Lindl. Dendrobium suavicans J.M.H.Shaw Dendrobium subacaule Reinw. ex Lindl. Dendrobium subansiriense D.Verma & Barbhuiya Dendrobium subbilobatum Schltr. Dendrobium subcarinatum Ormerod Dendrobium subclausum Rolfe Dendrobium subclausum var. pandanicola J.J.Wood Dendrobium subclausum var. phlox (Schltr.) J.J.Wood Dendrobium subclausum var. speciosum J.J.Wood Dendrobium subclausum var. subclausum Dendrobium subelobatum J.J.Sm. Dendrobium subfalcatum J.J.Sm. Dendrobium subflavidum Ridl. Dendrobium subintegrum (P.J.Cribb & B.A.Lewis) Schuit. & Peter B.Adams Dendrobium sublobatum J.J.Sm. Dendrobium subpandifolium J.J.Sm. Dendrobium subpetiolatum Schltr. Dendrobium subquadratum J.J.Sm. Dendrobium subradiatum J.J.Sm. Dendrobium subretusum J.J.Sm. Dendrobium subserratum Schltr. Dendrobium subtricostatum J.J.Sm. Dendrobium subulatoides Schltr. Dendrobium subulatum (Blume) Lindl. Dendrobium subuliferum J.J.Sm. Dendrobium × suffusum Cady Dendrobium sulcatum Lindl. Dendrobium sulphureum Schltr. Dendrobium sulphureum var. cellulosum (J.J.Sm.) T.M.Reeve & P.Woods Dendrobium sulphureum var. rigidifolium T.M.Reeve & P.Woods Dendrobium sulphureum var. sulphureum Dendrobium summerhayesianum A.D.Hawkes & A.H.Heller Dendrobium superans J.J.Sm. Dendrobium × superbiens Rchb.f. Dendrobium × superbiens nothovar. superbiens Dendrobium × superbiens nothovar. vinicolor (St.Cloud) Ormerod Dendrobium sutepense Rolfe ex Downie Dendrobium sutiknoi (P.O'Byrne Dendrobium suzukii T.Yukawa Dendrobium swartzii A.D.Hawkes & A.H.Heller Dendrobium sylvanum Rchb.f. T Dendrobium taniocaule Schuit., Juswara & Droissart Dendrobium takadui (Schltr.) J.J.Sm. Dendrobium tampangii P.O'Byrne Dendrobium tangerinum P.J.Cribb Dendrobium tanjiewhoei J.J.Wood & C.L.Chan Dendrobium tapiniense T.M.Reeve Dendrobium taurinum Lindl. Dendrobium taurulinum J.J.Sm. Dendrobium taveuniense Dauncey & P.J.Cribb Dendrobium tawauense J.J.Wood Dendrobium taylorii (F.Muell.) F.M.Bailey – smooth burr orchid Dendrobium teloense J.J.Sm. Dendrobium tenellum (Blume) Lindl. Dendrobium tentaculatum Schltr. Dendrobium tenue J.J.Sm. Dendrobium tenuicaule Hook.f. Dendrobium terengganuensis Rosli & Latiff Dendrobium teretifolium R.Br. – thin pencil orchid Dendrobium terminale C.S.P.Parish & Rchb.f. Dendrobium terrestre J.J.Sm. Dendrobium tetrachromum Rchb.f. Dendrobium tetraedre (Blume) Lindl. Dendrobium tetragonum A.Cunn. ex Lindl. – tree spider orchid Dendrobium tetragonum var. cacatua (D.L.Jones & M.A.Clem.) H.Mohr – yellow tree spider orchid Dendrobium tetragonum subsp. cataractarum Peter B.Adams, S.D.Lawson & G.A.Peterson Dendrobium tetragonum subsp.