| Dactyloglossum dominianum (E. G. Camus) Soó | = | Dactylorhiza conigera (Norman) ined. |
| Dactylorchis baltica (Klinge) Verm. | = | Dactylorhiza longifolia (Neuman) Aver. |
| Dactylorchis cilicica (L.) Verm. | = | Dactylorhiza maculata (L.) Soó |
| Dactylorchis cruenta (O. F. Müll.) Verm. | = | Dactylorhiza incarnata (L.) Soó subsp. cruenta (O. F. Müll.) P. D. Sell |
| Dactylorchis foliosa (Rchb. f.) Verm. | = | Dactylorhiza foliosa (Rchb. f.) Soó |
| Dactylorchis fuchsii (Druce) Verm. | = | Dactylorhiza fuchsii (Druce) Soó |
| Dactylorchis incarnata (L.) Verm. | = | Dactylorhiza incarnata (L.) Soó |
| Dactylorchis lapponica (Laest. ex Hartm.) Verm. | = | Dactylorhiza lapponica (Laest. ex Hartm.) Soó |
| Dactylorchis latifolia (L.) Rothm. | = | Dactylorhiza incarnata (L.) Soó |
| Dactylorchis maculata (L.) Verm. | = | Dactylorhiza maculata (L.) Soó |
| Dactylorchis maculata (L.) Verm. subsp. | = | Dactylorhiza maculata (L.) Soó |
| Dactylorchis majalis (Rchb.) Verm. | = | Dactylorhiza majalis (Rchb.) P. F. Hunt & Summerh. |
| Dactylorchis majalis (Rchb.) Verm. subsp. cambrensis R. H. Roberts | = | Dactylorhiza purpurella (T. Stephenson & T. A. Stephenson) Soó var. cambrensis (R. H. Roberts) R. M. Bateman & Denholm |
| Dactylorchis occidentalis (Pugsley) Verm. | = | Dactylorhiza majalis (Rchb.) P. F. Hunt & Summerh. subsp. occidentalis (Pugsley) P. D. Sell |
| Dactylorchis praetermissa (Druce) Verm. | = | Dactylorhiza praetermissa (Druce) Soó |
| Dactylorchis purpurella (T. Stephenson & T. A. Stephenson) Verm. | = | Dactylorhiza purpurella (T. Stephenson & T. A. Stephenson) Soó |
| Dactylorchis romana (Sebast.) Verm. | = | Dactylorhiza romana (Sebast.) Soó |
| Dactylorchis russowii (Klinge) Á. Löve & D. Löve | = | Dactylorhiza russowii (Klinge) Holub |
| Dactylorchis sesquipedalis (Willd.) Verm. | = | Dactylorhiza elata (Poir.) Soó subsp. sesquipedalis (Willd.) Soó |
| Dactylorchis traunsteineri (Saut. ex Rchb.) Verm. | = | Dactylorhiza traunsteineri (Saut. ex Rchb.) Soó |
| Dactylorchis traunsteineri (Saut. ex Rchb.) Verm. f. curvifolius (Nyl.) M. & C. | = | Dactylorhiza traunsteineri (Saut. ex Rchb.) Soó |
| Dactylorchis umbrosa (Kar. & Kir.) Wendelbo | = | Dactylorhiza umbrosa (Kar. & Kir.) Nevski |
| Dactylorhiza amblyoloba (Nevski) Aver. | = | Dactylorhiza urvilleana (Steud.) H. Baumann & Künkele |
| Dactylorhiza baltica (Klinge) N. I. Orlova | = | Dactylorhiza longifolia (Neuman) Aver. |
| Dactylorhiza baumanniana J. Hölzinger & Künkele subsp. smolikana | = | Dactylorhiza baumanniana () J.H |
| Dactylorhiza cataonica (H. Fleischm.) Holub | = | Dactylorhiza osmanica (Klinge) P.F.Hunt & Summerh. |
| Dactylorhiza chuhensis Renz & Taubenheim in P. H. Davis (ed.) | = | Dactylorhiza umbrosa (Kar. & Kir.) Nevski |
| Dactylorhiza cilicica (Klinge) Soó | = | Dactylorhiza osmanica (Klinge) P.F.Hunt & Summerh. |
| Dactylorhiza cruenta (O. F. Müll.) Soó | = | Dactylorhiza incarnata subsp. cruenta (O. F. Müll.) P. D. Sell |
| Dactylorhiza × delamainii (G. Keller ex T. Stephenson) Soó | = | Orchis × delamainii G. Keller ex T. Stephenson |
| Dactylorhiza elata (Poir.) Soó subsp. mauritanica | = | Dactylorhiza elata (Poir.) Soó |
| Dactylorhiza euxina (Nevski) H. Baumann & Künkele var. markowitschii (Soó) Renz & Taubenheim | = | Dactylorhiza euxina (Nevski) Czerep. |
| Dactylorhiza flavescens (K. Koch) Holub | = | Dactylorhiza romana subsp. georgica (Klinge) Soó ex Renz & Taubenheim |
| Dactylorhiza graeca H. Baumann | = | Dactylorhiza cordigera (Fr.) Soó var. graeca (H.Baumann) Presser |
| Dactylorhiza incarnata (L.) Soó | = | Dactylorhiza maculata (L.) Soó subsp. ericetorum (E. F. Linton) P. F. Hunt & Summerh. |
| Dactylorhiza incarnata (L.) Soó subsp. baumgartneriana B. Baumann & al. | = | Dactylorhiza kafiriana (L.) Soó subsp. baumgartneriana (B.Baumann, H.Baumann, R.Lorenz & Ruedi Peter) Sczep. & Kreutz |
| Dactylorhiza incarnata (L.) Soó subsp. haematodes (Rchb.) Soó | = | Dactylorhiza incarnata (L.) Soó subsp. cruenta (O. F. Müll.) P. D. Sell |
| Dactylorhiza incarnata (L.) Soó nothosubsp. versicolor (J. C. Schmidt ex Lüscher) Potucek | = | Dactylorhiza incarnata (L.) Soó nothosubsp. versicolor (J. C. Schmidt ex Lüscher) Potucek |
| Dactylorhiza incarnata f. ochrantha Landwehr | = | Dactylorhiza incarnata |
| Dactylorhiza × kerneriorum nothosubsp. kerneriorum | = | Dactylorhiza incarnata × maculata |
| Dactylorhiza lancibracteata (K. Koch) Renz | = | Dactylorhiza urvilleana (Steud.) H. Baumann & Künkele |
| Dactylorhiza lapponica (Laest. ex Hartm.) Soó subsp. russowii | = | Dactylorhiza russowii (Klinge) Holub |
| Dactylorhiza latifolia (L.) Soó | = | Dactylorhiza incarnata (L.) Soó |
| Dactylorhiza maculata (L.) Soó subsp. fuchsii | = | Dactylorhiza fuchsii (Druce) Soó |
| Dactylorhiza maculata (L.) Soó subsp. saccifera (Brongn.) Diklic | = | Dactylorhiza saccifera (Brongn.) Soó |
| Dactylorhiza × maculatiformis (Rouy) Borsos & Soó | = | Dactylorhiza × carnea nothosubsp. maculatiformis (Rouy) Gathoye & D. Tyteca |
| Dactylorhiza majalis (Rchb.) P. F. Hunt & Summerh. subsp. alpestris (Pugsley) Senghas | = | Dactylorhiza alpestris (Pugsley) Aver. |
| Dactylorhiza majalis (Rchb.) P. F. Hunt & Summerh. subsp. cambrensis (R. H. Roberts) ined. | = | Dactylorhiza purpurella (T. Stephenson & T. A. Stephenson) Soó var. cambrensis (R. H. Roberts) R. M. Bateman & Denholm |
| Dactylorhiza majalis (Rchb.) P. F. Hunt & Summerh. subsp. kerryensis (Wilmott) Senghas | = | Dactylorhiza majalis subsp. occidentalis (Pugsley) P. D. Sell |
| Dactylorhiza majalis (Rchb.) P. F. Hunt & Summerh. subsp. purpurella (T. Stephenson & T. A. Stephenson) D. M. Moore & Soó | = | Dactylorhiza purpurella (T. Stephenson & T. A. Stephenson) Soó |
| Dactylorhiza majalis (Rchb.) P. F. Hunt & Summerh. subsp. scotica E. Nelson | = | Dactylorhiza majalis (Rchb.) P. F. Hunt & Summerh. subsp. occidentalis (Pugsley) P. D. Sell |
| Dactylorhiza majalis (Rchb.) P. F. Hunt & Summerh. var. alpestris (Pugsley) Wucherpf. | = | Dactylorhiza alpestris (Pugsley) Aver. |
| Dactylorhiza markusii (Tineo) H. Baumann & Künkele | = | Dactylorhiza romana (Sebast.) Soó subsp. romana |
| Dactylorhiza maurusia (Emb. & Maire) Holub | = | Dactylorhiza durandii (Boiss. & Reut.) M.La |
| Dactylorhiza montellii (Verm.) P. Delforge | = | Dactylorhiza maculata subsp. elodes (Griseb.) Soó |
| Dactylorhiza × mortonii (Druce) Soó | = | Dactylorhiza × grandis (Druce) P. F. Hunt |
| Dactylorhiza occidentalis (Pugsley) P. Delforge | = | Dactylorhiza majalis (Rchb.) P. F. Hunt & Summerh. subsp. occidentalis (Pugsley) P. D. Sell |
| Dactylorhiza ochroleuca (Wüstnei ex Boll) Holub | = | Dactylorhiza incarnata (L.) Soó subsp. ochroleuca (Wüstnei ex Boll) P. F. Hunt & Summerh. |
| Dactylorhiza parvimajalis D. Tyteca & Gathoye | = | Dactylorhiza majalis (R.H.Roberts) H.A.Pedersen |
| Dactylorhiza persica (Schltr.) Soó | = | Dactylorhiza umbrosa (Kar. & Kir.) Nevski |
| Dactylorhiza pythagorae Gölz & H. R. Reinhard | = | Dactylorhiza kalopissii E. Nelson subsp. pythagorae (Gölz & H. R. Reinhard) Kreutz |
| Dactylorhiza romana (Sebast.) Soó subsp. bartonii Huxley & P. F. Hunt | = | Dactylorhiza insularis (Sommier) Ó. Sánchez & Herrero |
| Dactylorhiza romana (Sebast.) Soó subsp. georgica (Klinge) Soó | = | Dactylorhiza flavescens (K. Koch) Holub |
| Dactylorhiza romana (Sebast.) Soó subsp. markusii (Tineo) Holub | = | Dactylorhiza romana (Sebast.) Soó |
| Dactylorhiza romana (Sebast.) Soó subsp. siciliensis (Klinge) Soó | = | Dactylorhiza romana (Sebast.) Soó |
| Dactylorhiza ruthei (M. Schulze) Soó | = | Dactylorhiza traunsteineri (Businsk) Kreutz & Sczep. |
| Dactylorhiza sambucina (L.) Soó | = | Dactylorhiza incarnata (L.) Soó subsp. incarnata |
| Dactylorhiza sambucina subsp. insularis (Sommier ex Martelli) Soó | = | Dactylorhiza insularis (Sommier ex Martelli) Landwehr |
| Dactylorhiza × samnaunensis (Gsell) Soó | = | Dactylorhiza × kerneriorum nothosubsp. ampolai (Hautz.) ined. |
| Dactylorhiza sanasunitensis (H. Fleischm.) Soó | = | Dactylorhiza umbrosa (Kar. & Kir.) Nevski |
| Dactylorhiza savogiensis D. Tyteca & Gathoye | = | Dactylorhiza maculata (L.) Soó subsp. savogiensis (D. Tyteca & Gathoye) Kreutz |
| Dactylorhiza sesquipedalis (Willd.) M. Laínz | = | Dactylorhiza elata (Poir.) Soó subsp. sesquipedalis (Willd.) Soó |
| Dactylorhiza sphagnicola (Höppner) Aver. | = | Dactylorhiza majalis (Rchb.) P.F. Hunt & Summerh. subsp. sphagnicola (Höppner) H. A. Pedersen & Hedrén |
| Dactylorhiza sulphurea (Link) Franco subsp. pseudosambucina (Ten.) Franco | = | Dactylorhiza romana (Sebast. & Mauri) Soó |
| Dactylorhiza umbrosa (Kar. & Kir.) Nevski var. knorringiana Kraenzl. | = | Dactylorhiza umbrosa (Kar. & Kir.) Nevski |
| Dactylorhiza umbrosa (Kar. & Kir.) Nevski var. longibracteata Renz | = | Dactylorhiza umbrosa (Kar. & Kir.) Nevski |
| Dactylorhiza umbrosa (Kar. & Kir.) Nevski var. ochroleuca (Bornm.) Renz | = | Dactylorhiza umbrosa (Kar. & Kir.) Nevski |
| Dactylorhiza urvilleana (Steud.) H. Baumann & Künkele subsp. bithynica | = | Dactylorhiza saccifera (Brongn.) Soó |
| Dactylorhiza urvilleana (Steud.) H. Baumann & Künkele subsp. phoenissa | = | Dactylorhiza urvilleana (Steud.) H.Baumann & K |
| Dactylorhiza vanensis E. Nelson | = | Dactylorhiza umbrosa (Kar. & Kir.) Nevski |
| Dactylorhiza × vermeuleniana Soó | = | Dactylorhiza × dinglensis nothosubsp. vermeuleniana (Soó) ined. |
| Dactylorhiza viridis (L.) R. M. Bateman | = | Coeloglossum viride (L.) Hartm. |
| Dactylorhiza wirtgenii (Höppner) Soó | = | Dactylorhiza traunsteineri (Businsk) Kreutz & Sczep. |
| Dendrobium acianthum Schltr. | = | Oxystophyllum acianthum (Schltr.) M. A. Clem. |
| Dendrobium aggregatum Roxb. | = | Dendrobium lindleyi Steud. |
| Dendrobium album Hook. | = | Dendrobium aqueum Lindl. |
| Dendrobium amplum Lindl. | = | Epigeneium amplum (Lindl.) Summerh. |
| Dendrobium angraecifolium Schltr. in K. M. Schumann & C. A. G. Lauterbach | = | Dendrobium branderhorstii J. J. Sm. |
| Dendrobium angustifolium (Blume) Lindl. | = | Flickingeria angustifolia (Blume) A. D. Hawkes |
| Dendrobium arachnites Thouars | = | Aeranthes arachnitis (Thouars) Lindl. |
| Dendrobium asperifolium J. J. Sm. | = | Dendrobium cuthbertsonii F. Muell. |
| Dendrobium aurantiacum Rchb. f. | = | Bulbophyllum schillerianum () Rchb.f. |
| Dendrobium aurantiacum Rchb. f. var. zhaojuense (S. C. Sun & L. G. Xu) Z. H. Tsi | = | Dendrobium chryseum Rolfe |
| Dendrobium aureum Lindl. | = | Dendrobium heterocarpum Wall. ex Lindl. |
| Dendrobium bambusifolium C. S. P. Parish & Rchb. f. | = | Dendrobium haemoglossum Thwaites |
| Dendrobium beckleri F. Muell. | = | Dendrobium schoeninum Lindl. |
| Dendrobium bicostatum J. J. Sm. | = | Flickingeria bicostata (J. J. Sm.) A. D. Hawkes |
| Dendrobium bigibbum Lindl. var. albomarginatum F. M. Bailey | = | Dendrobium bigibbum Lindl. |
| Dendrobium bigibbum Lindl. var. compactum C. T. White | = | Dendrobium bigibbum Lindl. |
| Dendrobium boxalli Rchb. f. | = | Dendrobium gratiosissimum Rchb. f. |
| Dendrobium boxallii Rchb. f. | = | Dendrobium gratiosissimum Rchb. f. |
| Dendrobium brachythecum F. Muell. & Kraenzl. | = | Dendrobium macrophyllum () Lindl. |
| Dendrobium brinchangense Holttum | = | Dendrobium hasseltii (Blume) Lindl. |
| Dendrobium cacatua M. A. Clem. & D. L. Jones | = | Dendrobium tetragonum A. Cunn. ex Lindl. var. cacatua (M. A. Clem. & D. L. Jones) H. Mohr |
| Dendrobium calceolaria Carey | = | Dendrobium moschatum (Buch. -Ham.) Sw. |
| Dendrobium calopogon Rchb. f. | = | Flickingeria calopogon (Rchb. f.) A. D. Hawkes |
| Dendrobium camptocentrum Schltr. | = | Dendrobium platygastrium Rchb. f. |
| Dendrobium canaliculatum R. Br. var. nigrescens Nicholls | = | Dendrobium canaliculatum () R.Br. |
| Dendrobium capitisyork M. A. Clem. & D. L. Jones | = | Dendrobium tetragonum A. Cunn. ex Lindl. var. giganteum P. A. Gilbert |
| Dendrobium carnosum (Blume) Rchb. f. in W. G. Walpers | = | Xylobium variegatum (Ruiz & Pav.) Garay & Dunst. |
| Dendrobium cerinum Schltr. | = | Dendrobium austrocaledonicum Schltr. |
| Dendrobium chionanthum Schltr. in K. M. Schumann & C. A. G. Lauterbach | = | Cadetia chionantha (Schltr.) Schltr. |
| Dendrobium chrysoglossum Schltr. | = | Dendrobium obtusum Schltr. in K. M. Schumann & C. A. G. Lauterbach |
| Dendrobium chrysotis Rchb. f. | = | Dendrobium hookerianum Lindl. |
| Dendrobium chrysotoxum var. suavissimum (Rchb. f.) A. H. Kent in H. J. Veitch | = | Dendrobium chrysotoxum Lindl. |
| Dendrobium ciliatum C.S.P.Parish ex Hook.f. | = | Dendrobium venustum Teijsm. & Binn. |
| Dendrobium clavatum Wall. ex Lindl. | = | Dendrobium densiflorum () Lindl. |
| Dendrobium clavipes Hook. f. | = | Dendrobium truncatum Lindl. |
| Dendrobium coelogyne Rchb. f. | = | Epigeneium amplum (Lindl.) Summerh. |
| Dendrobium coerulescens Wall. ex Lindl. | = | Dendrobium nobile Lindl. |
| Dendrobium comatum (Blume) Lindl. | = | Flickingeria comata (Blume) A. D. Hawkes |
| Dendrobium concavissimum J. J. Sm. | = | Dendrobium obtusum Schltr. in K. M. Schumann & C. A. G. Lauterbach |
| Dendrobium concinnum Miq. | = | Oxystophyllum carnosum Blume |
| Dendrobium consanguineum J. J. Sm. | = | Dendrobium insigne (Blume) Rchb.f. ex Miq. |
| Dendrobium convexum (Blume) Lindl. | = | Flickingeria convexa (Blume) A. D. Hawkes |
| Dendrobium cornutum Hook. f. | = | Dendrobium hasseltii (Blume) Lindl. |
| Dendrobium crassinode Benson & Rchb. f. | = | Dendrobium pendulum Roxb. |
| Dendrobium crassinode Benson & Rchb. f. var. albiflorum Benson & Rchb. f. | = | Dendrobium pendulum Roxb. |
| Dendrobium crassinode var. album Williams | = | Dendrobium pendulum Roxb. |
| Dendrobium cretaceum Lindl. | = | Dendrobium polyanthum Wall. ex Lindl. |
| Dendrobium cucullatum R. Br. | = | Dendrobium aphyllum (Roxb.) C. E. C. Fisch. in J. S. Gamble |
| Dendrobium cultriforme Thouars | = | Polystachya cultriformis (Thouars) Lindl. ex Spreng. |
| Dendrobium cuneatipetalum J. J. Sm. | = | Oxystophyllum cuneatipetalum (J. J. Sm.) M. A. Clem. |
| Dendrobium curtisii Rchb. f. | = | Dendrobium hasseltii (Blume) Lindl. |
| Dendrobium cymbidioides Lindl. | = | Epigeneium cymbidioides (Blume) Summerh. |
| Dendrobium dalhousieanum Wall. | = | Dendrobium pulchellum Roxb. ex Lindl. |
| Dendrobium delicatulum Kraenzl. ex Warb. | = | Dendrobium subacaule Reinw. ex Lindl. |
| Dendrobium delicatulum Kraenzl. subsp. huliorum T. M. Reeve & P. Woods | = | Dendrobium delicatulum |
| Dendrobium denneanum Kerr | = | Dendrobium chryseum Rolfe |
| Dendrobium dicuphum F. Muell. | = | Dendrobium affine (Decne.) Steud. |
| Dendrobium distichophyllum A. D. Hawkes & A. H. Heller | = | Dendrobium rupicola Ridl. |
| Dendrobium durum J. J. Sm. | = | Flickingeria dura (J. J. Sm.) A. D. Hawkes |
| Dendrobium eburneum Rchb. f. ex Bateman | = | Dendrobium draconis Rchb. f. |
| Dendrobium ephemerum (J. J. Sm.) J. J. Sm. in E. D. Merrill | = | Dendrobium crumenatum Sw. |
| Dendrobium eriae F. Muell. | = | Bryobium eriaeoides (F. M. Bailey) M. A. Clem. & D. L. Jones |
| Dendrobium eriaeflorum Griff. | = | Spiranthes sinensis (Pers.) Ames |
| Dendrobium erythroglossum Hayata | = | Dendrobium falconeri Hook. |
| Dendrobium euphlebium Rchb. f. ex Lindl. | = | Dendrobium spurium (Blume) J. J. Sm. |
| Dendrobium excavatum (Blume) Miq. | = | Oxystophyllum excavatum Blume |
| Dendrobium exsculptum Teijsm. & Binn. | = | Dendrobium stuposum Lindl. |
| Dendrobium fantasticum L. O. Williams | = | Dendrobium amphigenyum Ridl. |
| Dendrobium farmeri Paxton var. album Regel | = | Dendrobium palpebrae Lindl. |
| Dendrobium fesselianum M. Wolff | = | Dendrobium peguanum Lindl. |
| Dendrobium fimbriatum Hook. var. oculatum Hook. | = | Dendrobium fimbriatum Hook. |
| Dendrobium flabellum Rchb. f. | = | Flickingeria fimbriata (Blume) A. D. Hawkes |
| Dendrobium formosanum (Rchb. f.) Masam. | = | Dendrobium nobile Lindl. |
| Dendrobium formosum var. giganteum Van Houtte | = | Dendrobium formosum Roxb. ex Lindl. in N. Wallich |
| Dendrobium frigidum Schltr. | = | Dendrobium masarangense subsp. theionanthum (Schltr.) T. M. Reeve & P. Woods |
| Dendrobium funiforme Blume | = | Cadetia funiformis (Blume) Schltr. |
| Dendrobium fuscescens Griff. | = | Epigeneium fuscescens (Griff.) Summerh. |
| Dendrobium fusiforme Thouars | = | Polystachya fusiformis (Thouars) Lindl. |
| Dendrobium galliceanum Linden | = | Dendrobium thyrsiflorum Rchb. f. ex André |
| Dendrobium geminatum (Blume) Lindl. | = | Epigeneium geminatum (Blume) Summerh. |
| Dendrobium glabrum J. J. Sm. | = | Diplocaulobium glabrum (J. J. Sm.) Kraenzl. in H. G. A. Engler (ed.) |
| Dendrobium gonzalesii Quisumb. | = | Dendrobium ceraula Rchb. f. |
| Dendrobium gouldii Rchb. f. var. acutum Rchb. f. | = | Dendrobium gouldii Rchb. f. |
| Dendrobium grandiflorum (Blume) Lindl. | = | Maxillaria grandiflora (Kunth) Lindl. |
| Dendrobium hagerupii J. J. Sm. | = | Oxystophyllum hagerupii (J. J. Sm.) M. A. Clem. |
| Dendrobium hasseltii Rchb. f. | = | Flickingeria angulata (Blume) A. D. Hawkes |
| Dendrobium hedyosmum Bateman ex Hook. f. | = | Dendrobium scabrilingue Lindl. |
| Dendrobium helvolum J. J. Sm. | = | Oxystophyllum helvolum (J. J. Sm.) M. A. Clem. |
| Dendrobium heteroideum Blume | = | Cadetia heteroidea (Blume) Schltr. |
| Dendrobium hillii F. Muell. | = | Sarcochilus hillii (F.Muell.) F.Muell. |
| Dendrobium hirsutum Griff. | = | Dendrobium longicornu Lindl. |
| Dendrobium hispidum A. Rich. in J. C. S. Dumont d'Urville | = | Cadetia hispida (A. Rich.) Schltr. |
| Dendrobium imperatrix Kraenzl. | = | Dendrobium lineale Rolfe |
| Dendrobium inauditum Rchb. f. | = | Diplocaulobium inauditum (Rchb. f.) Kraenzl. in H. G. A. Engler (ed.) |
| Dendrobium incrassatum (Blume) Miq. | = | Dendrobium indivisum (Blume) Miq. |
| Dendrobium indivisum (Blume) Miq. var. fuscum P. O'Byrne | = | Dendrobium indivisum (Blume) Miq. |
| Dendrobium integrilabium J. J. Sm. | = | Flickingeria integrilabia (J. J. Sm.) A. D. Hawkes |
| Dendrobium jamesianum Rchb. f. | = | Dendrobium infundibulum Lindl. |
| Dendrobium jerdonianum Wight | = | Dendrobium nutans Lindl. |
| Dendrobium kelsallii Ridl. | = | Flickingeria angustifolia (Blume) A. D. Hawkes |
| Dendrobium kenejianum Schltr. | = | Dendrobium ingratum J. J. Sm. |
| Dendrobium kuhlii (Blume) Lindl. | = | Dendrobium hasseltii (Blume) Lindl. |
| Dendrobium laciniosum Ridl. | = | Flickingeria laciniosa (Ridl.) A. D. Hawkes |
| Dendrobium leucolophotum Rchb. f. | = | Dendrobium affine (Decne.) Steud. |
| Dendrobium lichenastrum (F. Muell.) Kraenzl. in H. G. A. Engler (ed.) var. prenticei (F. Muell.) Dockrill | = | Dendrobium lichenastrum (F. Muell.) Kraenzl. in H. G. A. Engler (ed.) |
| Dendrobium lilacinum Rchb. f. | = | Dendrobium lancifolium () A.Rich. |
| Dendrobium listeroglossum Kraenzl. in H. G. Reichenbach | = | Dendrobium parcum Rchb. f. |
| Dendrobium lithocola D. L. Jones & M. A. Clem. | = | Dendrobium bigibbum Lindl. |
| Dendrobium litoreum F. M. Bailey | = | Dendrobium sphenochilum F. Muell. & Kraenzl. |
| Dendrobium lobbii Lindl. | = | Dendrobium aloifolium (Blume) Rchb. f. in W. G. Walpers |
| Dendrobium luteocilium Rupp | = | Dendrobium pruinosum Teijsm. & Binn. |
| Dendrobium luteolum var. chlorocentrum Bateman | = | Dendrobium luteolum Bateman ex Rchb. f. |
| Dendrobium macraei Lindl. | = | Flickingeria macraei (Lindl.) Seidenf. |
| Dendrobium macrophyllum Lindl. | = | Dendrobium anosmum Lindl. |
| Dendrobium macropus (Endl.) Rchb. f. ex Lindl. subsp. gracilicaule (F. Muell.) P. S. Green | = | Dendrobium gracilicaule F. Muell. |
| Dendrobium macrostachyum Lindl. | = | Dendrobium aphyllum (Roxb.) C. E. C. Fisch. in J. S. Gamble |
| Dendrobium macrum Schltr. in K. M. Schumann & C. A. G. Lauterbach | = | Dendrobium isochiloides () Kraenzl. |
| Dendrobium magnificum Schltr. | = | Dendrobium terrestre J. J. Sm. |
| Dendrobium margaritaceum Finet | = | Dendrobium christyanum Rchb. f. |
| Dendrobium mekynosepalum Schltr. in K. M. Schumann & C. A. G. Lauterbach | = | Diplocaulobium mekynosepalum (Schltr.) Kraenzl. in H. G. A. Engler (ed.) |
| Dendrobium melanochlamys Holttum | = | Dendrobium villosulum Wall. ex Lindl. |
| Dendrobium minax Rchb. f. | = | Dendrobium bicaudatum Reinw. ex Lindl. |
| Dendrobium minjemense Schltr. | = | Diplocaulobium minjemense (Schltr.) A. D. Hawkes |
| Dendrobium minutigibbum J. J. Sm. | = | Oxystophyllum minutigibbum (J. J. Sm.) M. A. Clem. |
| Dendrobium minutum Schltr. | = | Dendrobium parvulum Rolfe |
| Dendrobium miyakei Schltr. | = | Dendrobium goldschmidtianum Kraenzl. |
| Dendrobium monile Kraenzl. in H. G. A. Engler (ed.) | = | Dendrobium moniliforme (L.) Sw. |
| Dendrobium moschatum Wall. ex D. Don | = | Dendrobium moschatum (Buch. -Ham.) Sw. |
| Dendrobium moschatum var. cupreum Rchb. f. | = | Dendrobium moschatum (Buch. -Ham.) Sw. |
| Dendrobium musciferum Schltr. | = | Dendrobium macrophyllum A. Rich. in J. C. S. Dumont d'Urville var. macrophyllum |
| Dendrobium myandii | = | Dendrobium mayandyi T. M. Reeve & Renz |
| Dendrobium nobile Lindl. var. candidulum L. Lind. | = | Dendrobium nobile Lindl. |
| Dendrobium nobile var. nobilius Rchb. f. | = | Dendrobium nobile Lindl. |
| Dendrobium nobile Lindl. var. virginale | = | Dendrobium nobile Lindl. |
| Dendrobium normale Falc. | = | Dendrobium fimbriatum Hook. |
| Dendrobium nutans Lindl. | = | Geodorum densiflorum (Lam.) Schltr. |
| Dendrobium odontochilum Rchb. f. | = | Dendrobium aemulum () R.Br. |
| Dendrobium ophioglossum Rchb. f. | = | Dendrobium smillieae F. Muell. |
| Dendrobium ostrinoglossum Rupp | = | Dendrobium lasianthera J. J. Sm. |
| Dendrobium paniferum J. J. Sm. | = | Oxystophyllum paniferum (J. J. Sm.) M. A. Clem. |
| Dendrobium parishii Rchb. f. var. alba | = | Dendrobium parishii Rchb. f. |
| Dendrobium pauciflorum King & Pantl. | = | Dendrobium praecinctum Rchb. f. |
| Dendrobium paxtonii Lindl. | = | Dendrobium chrysanthum Wall. ex Lindl. |
| Dendrobium peekelii Schltr. | = | Dendrobium schwartzkopfianum Kraenzl. |
| Dendrobium phalaenopsis Fitzg. | = | Dendrobium bigibbum Lindl. |
| Dendrobium phalaenopsis Fitzg. var. statterianum auct. | = | Dendrobium bigibbum Lindl. |
| Dendrobium phlox Schltr. | = | Dendrobium subclausum var. phlox (Schltr.) J. J. Wood |
| Dendrobium pierardii Roxb. ex Hook. | = | Dendrobium aphyllum (Roxb.) C. E. C. Fisch. in J. S. Gamble |
| Dendrobium platycaulon Rolfe | = | Dendrobium compressum Lindl. |
| Dendrobium podagraria Hook. f. | = | Dendrobium angulatum Lindl. |
| Dendrobium polyphlebium Rchb. f. | = | Dendrobium parishii Rchb. f. |
| Dendrobium polysema Schltr. in K. M. Schumann & C. A. G. Lauterbach | = | Dendrobium macrophyllum () Lindl. |
| Dendrobium polysema var. pallidum Chadim | = | Dendrobium polysema Schltr. in K. M. Schumann & C. A. G. Lauterbach |
| Dendrobium polystachys Thouars | = | Polystachya mauritiana Spreng. |
| Dendrobium polystachyum Sw. | = | Polystachya concreta (Jacq.) Garay & H. R. Sweet |
| Dendrobium porphyrophyllum Guillaumin | = | Dendrobium indivisum (Blume) Miq. |
| Dendrobium prenticei (F. Muell.) Nicholls | = | Dendrobium lichenastrum (F. Muell.) Kraenzl. |
| Dendrobium primulinum Lindl. | = | Dendrobium polyanthum Wall. ex Lindl. |
| Dendrobium prostheciglossum Schltr. var. obtusum Schltr. | = | Dendrobium prostheciglossum Schltr. |
| Dendrobium pseudofrigidum J. J. Sm. | = | Dendrobium masarangense Schltr. subsp. theionanthum (Schltr.) T. M. Reeve & P. Woods |
| Dendrobium pulchellum Lodd. | = | Dendrobium loddigesii Rolfe |
| Dendrobium pulchrum Schltr. | = | Dendrobium macrophyllum () Lindl. |
| Dendrobium pumilum Sw. | = | Dendrobium pachyphyllum (Kuntze) Bakh. f. |
| Dendrobium purpureum Roxb. subsp. candidulum (Rchb. f.) Dauncey & P. J. Cribb | = | Dendrobium purpureum Roxb. subsp. candidulum (Rchb. f.) Dauncey & P. J. Cribb |
| Dendrobium pusillum Kunth in F. W. H. von Humboldt | = | Trichosalpinx pusilla (Kunth) Luer |
| Dendrobium pygmaeum Lindl. | = | Bulbophyllum pygmaeum (Sm.) Lindl. |
| Dendrobium quadrangulare C. S. P. Parish & Rchb. f. | = | Dendrobium hymenanthum Rchb. f. |
| Dendrobium ramosum (Ruiz & Pav.) Pers. | = | Maxillaria ramosa Ruiz & Pav. |
| Dendrobium rhodopterygium Rchb. f. | = | Dendrobium parishii Rchb. f. |
| Dendrobium rigens Rchb. f. in W. G. Walpers | = | Oxystophyllum carnosum Blume |
| Dendrobium roseum Sw. | = | Polystachya elastica Lindl. |
| Dendrobium rotundatum Benth. | = | Epigeneium rotundatum (Lindl.) Summerh. |
| Dendrobium rugosum (Blume) Lindl. var. glaucophyllum (Teijsm. & Binn.) J. J. Sm. | = | Dendrobium rugosum (Blume) Lindl. |
| Dendrobium ruppianum A. D. Hawkes ex F. Gordon | = | Dendrobium jonesii () Rendle |
| Dendrobium sanderae Rolfe var. major auct. | = | Dendrobium sanderae Rolfe |
| Dendrobium sanderae Rolfe var. sangaoense | = | Dendrobium sanderae Rolfe |
| Dendrobium sanderae Rolfe var. surigaense Quisumb. | = | Dendrobium sanderae Rolfe |
| Dendrobium sarcopodioides J. J. Sm. | = | Epigeneium simplex (J. J. Sm.) Summerh. |
| Dendrobium schildhaueri Ormerod & H. A. Pedersen | = | Dendrobium kontumense Gagnep. |
| Dendrobium schneiderianum Rchb. f. | = | Dendrobium × schneiderianum Rchb. f. |
| Dendrobium seemannii L. O. Williams | = | Dendrobium vagans Schltr. |
| Dendrobium semifuscum (Rchb. f.) Lavarack & P. J. Cribb | = | Dendrobium trilamellatum J. J. Sm. |
| Dendrobium serra (Lindl.) Lindl. | = | Dendrobium aloifolium (Blume) Rchb. f. in W. G. Walpers |
| Dendrobium simplex J. J. Sm. | = | Epigeneium simplex (J. J. Sm.) Summerh. |
| Dendrobium sinuatum (Lindl.) Lindl. ex Rchb. f. in W. G. Walpers | = | Oxystophyllum sinuatum (Lindl.) M. A. Clem. |
| Dendrobium sophronites Schltr. | = | Dendrobium cuthbertsonii F. Muell. |
| Dendrobium spathaceum Lindl. | = | Dendrobium candidum Wall. ex Lindl. |
| Dendrobium speciosissimum Rolfe | = | Dendrobium spectatissimum Rchb. f. |
| Dendrobium speculigerum Schltr. | = | Oxystophyllum speculigerum (Schltr.) M. A. Clem. |
| Dendrobium sphegidoglossum Rchb. f. | = | Dendrobium stuposum Lindl. |
| Dendrobium squamiferum J. J. Sm. | = | Dendrobium melanostictum Schltr. in K. M. Schumann & C. A. G. Lauterbach |
| Dendrobium stricklandianum Rchb. f. | = | Dendrobium catenatum Lindl. |
| Dendrobium stuartii F. M. Bailey | = | Dendrobium macrostachyum Lindl. |
| Dendrobium suavissimum Rchb. f. | = | Dendrobium chrysotoxum Lindl. |
| Dendrobium sulawesiense Erfkamp & O. Gruss | = | Dendrobium glomeratum Rolfe |
| Dendrobium superbum Lindl. | = | Dendrobium anosmum Lindl. |
| Dendrobium superbum Rchb. f. in W. G. Walpers var. anosmum | = | Dendrobium anosmum Lindl. |
| Dendrobium takahashii Carr | = | Dendrobium ovipostoriferum J. J. Sm. |
| Dendrobium taylorii (F. Muell.) F. M. Bailey | = | Cadetia taylorii (F. Muell.) Schltr. |
| Dendrobium tenuissimum Rupp | = | Dendrobium mortii F. Muell. |
| Dendrobium teres Lindl. | = | Papilionanthe teres (Roxb.) Schltr. |
| Dendrobium teretifolium f. fairfaxii (F. Muell. ex Fitzg.) Clemesha | = | Dendrobium teretifolium var. fairfaxii (F. Muell. ex Fitzg.) F. M. Bailey |
| Dendrobium ternatense J. J. Sm. | = | Dendrobium macrophyllum () Lindl. |
| Dendrobium tetragonum A. Cunn. ex Lindl. var. hayesianum | = | Dendrobium tetragonum A. Cunn. ex Lindl. |
| Dendrobium tetrodon Rchb. f. ex Lindl. | = | Dendrobium macrostachyum Lindl. |
| Dendrobium theionanthum Schltr. | = | Dendrobium masarangense subsp. theionanthum (Schltr.) T. M. Reeve & P. Woods |
| Dendrobium toadjanum J. J. Sm. | = | Cadetia collina Schltr. |
| Dendrobium topaziacum Ames | = | Dendrobium bullenianum Rchb. f. |
| Dendrobium torricellianum Kraenzl. in H. G. A. Engler (ed.) | = | Oxystophyllum torricellianum (Kraenzl.) M. A. Clem. |
| Dendrobium tortile Lindl. | = | Dendrobium monophyllum () F.Muell. |
| Dendrobium tosaense Makino | = | Dendrobium catenatum Lindl. |
| Dendrobium trachyrhizum Schltr. | = | Dendrobium angustipetalum J. J. Sm. |
| Dendrobium treacherianum Rchb. f. ex Hook. f. | = | Epigeneium treacherianum (Rchb. f. ex Hook. f.) Summerh. |
| Dendrobium uncinatum Schltr. | = | Dendrobium vexillarius var. uncinatum (Schltr.) T. M. Reeve & P. Woods |
| Dendrobium undulatum (Ruiz & Pav.) Pers. | = | Xylobium undulatum (Ruiz & Pav.) Rolfe |
| Dendrobium undulatum (Ruiz & Pav.) Pers. var. broomfieldii Fitzg. | = | Dendrobium discolor Lindl. var. broomfieldii (Fitzg.) M. A. Clem. & D. L. Jones |
| Dendrobium vanoverberghii Ames | = | Dendrobium papilio Loher |
| Dendrobium veratrifolium Roxb. | = | Dendrobium lineale Rolfe |
| Dendrobium vitellinum Kraenzl. in H. G. A. Engler (ed.) | = | Dendrobium mohlianum Rchb. f. subsp. mohlianum |
| Dendrobium wardianum R. Warner var. fascinatir L. Lind. | = | Dendrobium wardianum R. Warner |
| Dendrobium wardianum var. giganteum Williams et Moore | = | Dendrobium wardianum R. Warner |
| Dendrobium warianum Schltr. | = | Cadetia funiformis (Blume) Schltr. |
| Dendrobium wilkianum Rupp | = | Dendrobium mirbelianum Gaudich. |
| Dendrobium wilmsianum Schltr. | = | Dendrobium compactum Rolfe ex W. Hackett |
| Dendrobium xantholeucum Rchb. f. | = | Flickingeria xantholeuca (Rchb. f.) A. D. Hawkes |
| Dendrochilum album Ridl. | = | Dendrochilum pallidiflavens () Blume |
| Dendrochilum bartonii (Ridl.) Schltr. | = | Dendrochilum longifolium Rchb. f. |
| Dendrochilum bigibbosum J. J. Sm. | = | Dendrochilum kingii (Hook. f.) J. J. Sm. var. kingii |
| Dendrochilum bistortum J. J. Sm. | = | Dendrochilum convallariiforme () Schauer |
| Dendrochilum cobolbine Rchb. f. | = | Dendrochilum zollingeri Miq. |
| Dendrochilum cucumerinum Rchb. f. | = | Dendrochilum uncatum () Rchb.f. |
| Dendrochilum lineare (Ridl.) Holttum | = | Dendrochilum simile Blume |
| Dendrochilum spathulatum Ridl. | = | Dendrochilum pallidiflavens () Blume |
| Dendrochilum sphacelatum Pfitzer | = | Dendrochilum tenellum (Nees & Meyen) Ames |
| Dendrocolla acuminatissima Blume | = | Thrixspermum acuminatissimum (Blume) Rchb. f. |
| Dendrocolla arachnites Blume | = | Thrixspermum centipeda Lour. |
| Dendrocolla emarginata Blume | = | Ascochilus emarginatus (Blume) Schuit. |
| Dendrocolla gracilenta Rchb. f. | = | Grosourdya zollingeri (Rchb. f.) Rchb. f. |
| Dendrocolla rhopalorrhachis Rchb. f. | = | Tuberolabium rhopalorrhachis (Rchb. f.) J. J. Wood |
| Dendrocolla zollingeri Rchb. f. | = | Grosourdya zollingeri (Rchb. f.) Rchb. f. |
| Dendrolirium acuminatum Blume | = | Eria acuminata (Blume) Lindl. |
| Dendrolirium appendiculatum Blume | = | Pinalia appendiculata (Blume) Kuntze |
| Dendrolirium flavescens Blume | = | Pinalia flavescens (Blume) Kuntze |
| Dendrolirium pusillum Blume | = | Phreatia pusilla (Blume) Lindl. |
| Deroemera acuminata Rendle & Schltr. | = | Holothrix aphylla (Forssk.) Rchb. f. |
| Deroemera praecox (Rchb. f.) Rolfe in D. Oliver & auct. suc. (eds.) | = | Holothrix praecox () Rchb.f. |
| Desmotrichum angulatum Blume | = | Dendrobium barbatum Breda |
| Desmotrichum pusillum Blume | = | Dendrobium pachyphyllum (Kuntze) Bakh. f. |
| Diacrium bicornutum Benth. | = | Caularthron bicornutum (Hook.) Raf. |
| Diadenium ecuadorense Garay | = | Systeloglossum ecuadorense (Garay) Dressler & N. H. Williams |
| Diaphananthe kamerunensis (Schltr.) Schltr. | = | Rhipidoglossum kamerunense (Schltr.) Garay |
| Diaphananthe meliantha P. J. Cribb | = | Rhipidoglossum melianthum (P. J. Cribb) Senghas |
| Diaphananthe oxycentron Cribb | = | Rhipidoglossum oxycentron (P. J. Cribb) Senghas |
| Diaphananthe pachyrhiza P. J. Cribb in I. F. la Croix & al. | = | Rhipidoglossum pulchellum (Summerh.) Garay |
| Diaphananthe pulchella Summerh. | = | Rhipidoglossum pulchellum (Summerh.) Garay |
| Diaphananthe rutila (Rchb. f.) Summerh. | = | Rhipidoglossum rutilum (Rchb. f.) Schltr. |
| Diaphananthe stellata P. J. Cribb | = | Rhipidoglossum stellatum (P. J. Cribb) Szlach. & Olszewski |
| Diaphananthe stolzii Schltr. | = | Rhipidoglossum stolzii (Schltr.) Garay |
| Diaphananthe subsimplex Summerh. | = | Rhipidoglossum subsimplex (Summerh.) Garay |
| Diaphananthe tanneri P. J. Cribb | = | Rhipidoglossum tanneri (P. J. Cribb) Senghas |
| Diaphananthe xanthopollinia (Rchb. f.) Summerh. | = | Rhipidoglossum xanthopollinium (Rchb. f.) Schltr. |
| Dicerostylis lanceolata Blume | = | Hylophila lanceolata (Blume) Miq. |
| Dichaea echinocarpa (Sw.) Lindl. | = | Dichaea pendula (Aubl.) Cogn. |
| Dichaea hookeri Garay & H. R. Sweet | = | Dichaea picta Rchb. f. in W. W. Saunders |
| Dichaea swartzii (C. Schweinf.) Garay & H. R. Sweet | = | Dichaea pendula (Aubl.) Cogn. |
| Dichaea verrucosa Ames & C. Schweinf. | = | Dichaea muricata (Sw.) Lindl. |
| Dicrypta baueri Lindl. | = | Heterotaxis sessilis (Sw.) F. Barros |
| Dicrypta densifolia Poepp. & Endl. | = | Maxillaria densifolia (Poepp. & Endl.) Rchb. f. |
| Didiciea cunninghamii King & Prain | = | Tipularia cunninghamii (King & Prain) ined. |
| Diglyphosa macrophylla (King & Pantl.) King & Pantl. | = | Diglyphosa latifolia Blume |
| Dilochia gracilis (Ames & C. Schweinf.) Carr | = | Dilochia rigida (Ridl.) J. J. Wood in J. J. Wood & al. |
| Dilochia pentandra Rchb. f. | = | Dilochia wallichii Lindl. |
| Dimerandra elegans (Focke) Siegerist | = | Dimerandra emarginata (G. Mey.) Hoehne |
| Dimerandra lamellata (Westc. ex Lindl.) Siegerist ex C. W. Ham. | = | Dimerandra emarginata (G. Mey.) Hoehne |
| Dimerandra stenopetala (Hook.) Schltr. | = | Dimerandra emarginata (G. Mey.) Hoehne |
| Dimerandra tenuicaulis (Rchb. f.) Siegerist | = | Dimerandra emarginata (G. Mey.) Hoehne |
| Diothonea gratissima Rchb. f. | = | Epidendrum gratissimum (Rchb. f.) Hágsater & Dodson |
| Diothonea imbricata Lindl. | = | Scaphyglottis imbricata (Lindl.) Dressler |
| Diothonea megalospatha (Rchb. f.) Garay & Dunst. | = | Epidendrum megalospathum Rchb. f. |
| Diphyes gibbosa Blume | = | Bulbophyllum gibbosum (Blume) Lindl. |
| Diphyes tenella Blume | = | Bulbophyllum ovalifolium (Blume) Lindl. |
| Diplacorchis angolensis (Schltr.) Schltr. | = | Brachycorythis angolensis (Schltr.) Schltr. |
| Diplacorchis disoides (Ridl.) Schltr. | = | Brachycorythis disoides (Ridl.) Kraenzl. |
| Diplectrum amoenum Thouars | = | Satyrium amoenum (Thouars) A. Rich. |
| Diplocaulobium chrysotropis (Schltr.) A. D. Hawkes | = | Dendrobium chrysotropis Schltr. in K. M. Schumann & C. A. G. Lauterbach |
| Diplocaulobium obyrnei W. K. Harris | = | Dendrobium obyrnei (W. K. Harris) Schuit. & de Vogel |
| Diplocaulobium pleurothalloides (Kraenzl.) Ormerod | = | Diplocaulobium inauditum (Rchb. f.) Kraenzl. in H. G. A. Engler (ed.) |
| Diplocaulobium regale (Schltr.) A. D. Hawkes | = | Dendrobium regale Schltr. |
| Diplomeris boxallii Rolfe | = | Diplomeris pulchella D. Don |
| Dipodium pandanum F. M. Bailey | = | Dipodium scandens (Blume) J. J. Sm. |
| Dipodium punctatum (Sm.) R. Br. | = | Dipodium squamatum (G. Forst.) R. Br. |
| Dipodium punctatum (Sm.) R. Br. var. squamatum (G. Forst.) Finet ex Guillaumin | = | Dipodium squamatum (G. Forst.) R. Br. |
| Dipteranthus bradei Schltr. | = | Zygostates bradei (Schltr.) Garay |
| Dipteranthus densiflorus Senghas | = | Zygostates densiflora (Senghas) Baptista |
| Dipteranthus duchii Pabst | = | Zygostates bradei (Schltr.) Garay |
| Dipteranthus estradae Dodson | = | Zygostates apiculata (Lindl.) Toscano |
| Dipteranthus grandiflorus (Lindl.) Pabst | = | Zygostates grandiflora (Lindl.) Mansf. |
| Dipteranthus lindmanii Kraenzl. | = | Zygostates alleniana Kraenzl. |
| Dipteranthus linearisepalus Senghas | = | Zygostates linearisepala (Senghas) Toscano |
| Dipteranthus obliquus (Schnee) Garay & Dunst. | = | Zygostates obliqua (Schnee) Toscano |
| Dipteranthus ovatipetalus Brade | = | Zygostates ovatipetala (Brade) Toscano |
| Dipteranthus pellucidus (Rchb. f.) Cogn. in C. F. P. von Martius & auct. suc. (eds.) | = | Zygostates pellucida Rchb. f. in W. G. Walpers |
| Dipteranthus planifolius (Rchb. f.) Garay | = | Zygostates apiculata (Lindl.) Toscano |
| Disa aemula Bolus | = | Disa cornuta (L.) Sw. |
| Disa amblyopetala Schltr. | = | Disa hircicornis Rchb. f. |
| Disa auriculata (Bolus) Rolfe in W. H. Harvey & auct. suc. (eds.) | = | Disa densiflora (Lindl.) Bolus |
| Disa brevicornis () Lindl. | = | Disa brevicornis (Lindl.) Bolus |
| Disa capricornis Rchb. f. | = | Disa gladioliflora Burch. ex Lindl. subsp. capricornis (Rchb. f.) H. P. Linder |
| Disa charpentieriana Rchb. f. | = | Disa multifida Lindl. |
| Disa clavigera (Lindl.) Bolus | = | Disa obliqua Lindl. subsp. clavigera (Lindl.) Bytebier |
| Disa compta Summerh. | = | Disa caffra Bolus |
| Disa deckenii Rchb. f. | = | Disa fragrans Schltr. subsp. deckenii (Rchb. f.) H. P. Linder |
| Disa erubescens Rendle | = | Disa erubescens Rendle subsp. carsonii (N. E. Br.) H. P. Linder |
| Disa erubescens Rendle var. carsonii (N. E. Br.) Geerinck | = | Disa erubescens Rendle subsp. carsonii (N. E. Br.) H. P. Linder |
| Disa flanaganii (Bolus) Rolfe in W. H. Harvey & auct. suc. (eds.) | = | Corycium flanaganii (Bolus) Kurzweil & H. P. Linder |
| Disa grandiflora L. f. | = | Disa uniflora P. J. Bergius |
| Disa hallii Schelpe | = | Pterygodium hallii (Schelpe) Kurzweil & H. P. Linder |
| Disa inversum (Thunb.) Rolfe | = | Pterygodium inversum (Thunb.) Sw. |
| Disa jacottetiae Kraenzl. | = | Disa crassicornis Lindl. |
| Disa lacera Sw. | = | Disa hians (L. f.) Spreng. |
| Disa macrantha Sw. | = | Disa cornuta (L.) Sw. |
| Disa micrantha Lindl. | = | Disa bracteata Sw. |
| Disa multiflora (Sond.) Bolus | = | Disa densiflora (Lindl.) Bolus |
| Disa nyassana Schltr. | = | Disa zombica N. E. Br. in D. Oliver & auct. suc. (eds.) |
| Disa patens (L. f.) Thunb. | = | Disa filicornis (L.f.) Thunb. |
| Disa perrieri Schltr. | = | Disa caffra Bolus |
| Disa picta Sond. | = | Disa obtusa Lindl. subsp. picta (Sond.) H. P. Linder |
| Disa rungweënsis Schltr. subsp. rhodesiaca (Summerh.) Summerh. | = | Disa zimbabweensis H. P. Linder |
| Disa sabulosa Kraenzl. | = | Disa sabulosa (Kraenzl.) Bolus |
| Disa schimperi N. E. Br. | = | Disa scutellifera A. Rich. |
| Disa stolzii Schltr. | = | Disa erubescens Rendle subsp. carsonii (N. E. Br.) H. P. Linder |
| Disa tabularis Sond. | = | Disa obtusa Lindl. |
| Disa torta (Thunb.) Sw. | = | Disa biflora (L.) Druce |
| Disa tripetaloides (L. f.) N. E. Br. subsp. aurata (Bolus) H. P. Linder | = | Disa aurata (Bolus) L. T. Parker & Koop. |
| Disperis anomala Schltr. | = | Disperis stenoplectron Rchb. f. |
| Disperis centrocorys Schltr. | = | Disperis nemorosa Rendle |
| Disperis comorensis Schltr. | = | Disperis humblotii Rchb. f. |
| Disperis gracilis Schltr. | = | Disperis wealei Rchb. f. |
| Disperis javanica J. J. Sm. | = | Disperis neilgherrensis Wight |
| Disperis stenoglossa Schltr. | = | Disperis woodii Bolus |
| Disperis stolzii Schltr. | = | Disperis johnstonii Rchb. f. ex Rolfe in D. Oliver & auct. suc. (eds.) |
| Diuris althoferi Rupp | = | Diuris abbreviata F. Muell. ex Benth. |
| Diuris colemaniae Rupp | = | Diuris tricolor Fitzg. |
| Diuris dendrobioides Fitzg. | = | Diuris punctata (R.Br.) Ewart & B.Rees |
| Diuris elongata Sw. | = | Diuris punctata (R.Br.) Ewart & B.Rees |
| Diuris flavopurpurea Messmer | = | Diuris platichila Fitzg. |
| Diuris lineata Messmer | = | Diuris platichila Fitzg. |
| Diuris palachila R. S. Rogers | = | Diuris × palachila R. S. Rogers |
| Diuris pallens Benth. | = | Diuris pedunculata R. Br. |
| Diuris porrifolia Lindl. | = | Diuris corymbosa Lindl. |
| Diuris sheaffiana Fitzg. | = | Diuris tricolor Fitzg. |
| Diuris spathulata Sw. | = | Diuris aurea Sm. |
| Dodsonia falcata Ackerman | = | Stenia falcata (Ackerman) Dressler |
| Dodsonia saccata (Garay) Ackerman | = | Stenia saccata Garay |
| Domingoa hymenodes () Schltr. | = | Domingoa haematochila (Rchb. f.) Carabia |
| Dondodia erosa (Garay) Luer | = | Acianthera erosa (Garay) ined. |
| Doritis braceana Hook. f. | = | Phalaenopsis braceana (Hook. f.) Christenson |
| Doritis philippinensis Ames | = | Phalaenopsis deliciosa Rchb. f. |
| Doritis pulcherrima Lindl. | = | Phalaenopsis pulcherrima (Lindl.) J. J. Sm. |
| Doritis taenialis (Lindl.) Hook. f. | = | Phalaenopsis taenialis (Lindl.) Christenson & Pradhan |
| Doritis wightii (Rchb. f.) Benth. & Hook. f. | = | Phalaenopsis deliciosa () Rchb.f. |
| Dracontia carnosilabia (A. H. Heller & A. D. Hawkes) Luer | = | Stelis carnosilabia (A. H. Heller & A. D. Hawkes) Pridgeon & M. W. Chase |
| Dracontia macrantha (L. O. Williams) Luer | = | Stelis cylindrata Pridgeon & M. W. Chase |
| Dracontia pachyglossa (Lindl.) Luer | = | Stelis pachyglossa (Lindl.) Pridgeon & M. W. Chase |
| Dracontia powellii (Schltr.) Luer | = | Stelis gigantea Pridgeon & M. W. Chase |
| Dracontia tuerckheimii (Schltr.) Luer | = | Stelis megachlamys (Schltr.) Pupulin |
| Dracula gaskelliana (Rchb. f.) Luer | = | Dracula erythrochaete (Rchb. f.) Luer |
| Dracula iricolor (Rchb. f. ex Kraenzl.) Luer & R. Escobar | = | Dracula trichroma (Schltr.) Hermans |
| Dracula niesseniae P. Ortiz | = | Dracula decussata Luer & R. Escobar |
| Dracula radiella Luer | = | Dracula fuliginosa (Luer) Luer |
| Dracula sodiroi subsp. erythrocodon Luer & Dalström | = | Dracula erythrocodon (Luer & Dalström) O. Gruss & M. Wolff |
| Dracula trichroma Hermans | = | Dracula iricolor (Rchb. f.) Luer & R. Escobar |
| Dracula troglodytes (E. Morren) Luer | = | Dracula benedictii (Rchb. f.) Luer |
| Drakaea irritabilis (F. Muell.) Rchb. f. | = | Arthrochilus irritabilis F. Muell. |
| Drakonorchis barbarossa (Rchb. f.) D. L. Jones & M. A. Clem. | = | Caladenia barbarossa Rchb. f. |
| Drakonorchis mesocera (Hopper & A. P. Br.) D. L. Jones & M. A. Clem. | = | Caladenia mesocera Hopper & A. P. Br. |
| Dressleria suavis (Ames & C. Schweinf.) Dodson | = | Dressleria eburnea (Rolfe) Dodson |
| Dryadella paranaensis (Schltr.) Luer | = | Dryadella lilliputiana (Cogn.) Luer |
| Dryadella simulatrix (F. Lehm. & Kraenzl.) Luer | = | Dryadella pusiola (Rchb. f.) Luer |
| Dryopeia discolor Thouars | = | Disperis cordata Sw. |
| Dryopeia oppositifolia (Sm.) Thouars | = | Disperis oppositifolia Sm. in A. Rees |
| Dryopeia tripetaloides Thouars | = | Disperis tripetaloides (Thouars) Lindl. |
| Dungsia marcaliana Campacci & Chiron | = | Cattleya marcaliana (Campacci & Chiron) Van den Berg |