Macodes lanceolata – synonym of Rhomboda lanceolata
Macrostylis disticha – synonym of Corymborkis veratrifolia
Malaxis angustifolia – synonym of Liparis caespitosa
Malaxis caespitosa – synonym of Liparis caespitosa
Malaxis cernua – synonym of Geodorum densiflorum
Malaxis congesta – synonym of Malaxis ophrydis
Malaxis curranii – synonym of Malaxis ophrydis
Malaxis gibbosa – synonym of Malaxis dryadum
Malaxis heliophoba – synonym of Malaxis undulata
Malaxis latifolia – synonym of Malaxis ophrydis
Malaxis latifolia Sm. f. aureovariegata – synonym of Malaxis ophrydis
Malaxis latifolia Sm. var. fusca – synonym of Malaxis ophrydis
Malaxis minima – synonym of Liparis caespitosa
Malaxis nutans – synonym of Geodorum densiflorum
Malaxis plicata – synonym of Malaxis ophrydis
Malaxis rheedii – synonym of Liparis transtillata
Malaxis ridleyana – synonym of Malaxis ridleyana
Malaxis sciaphila bismarckiensis
Malaxis sordida – synonym of Malaxis xanthochila
Malaxis vietnamensis – synonym of Malaxis ophrydis
Malaxis zippelii – synonym of Malaxis moluccana
Malleola microphyton – synonym of Saccolabiopsis microphyton
Malleola pallida – synonym of Saccolabiopsis pallida
Malleola rara – synonym of Saccolabiopsis rara
Mecosa angustata – synonym of Platanthera angustata
Mediocalcar abbreviatum – synonym of Mediocalcar versteegii
Mediocalcar albicoccineum – synonym of Mediocalcar bifolium
Mediocalcar alpinum – synonym of Mediocalcar agathodaemonis
Mediocalcar alpinum J.J.Sm. var. spathipetalum – synonym of Mediocalcar agathodaemonis
Mediocalcar angustifolium Gilli – synonym of Mediocalcar bifolium
Mediocalcar angustifolium Schltr. – synonym of Mediocalcar versteegii
Mediocalcar angustum – synonym of Mediocalcar bifolium
Mediocalcar bicolor – synonym of Mediocalcar paradoxum robustum
Mediocalcar bifolium J.J.Sm. var. validum – synonym of Mediocalcar agathodaemonis
Mediocalcar brevisaccatum – synonym of Mediocalcar bifolium
Mediocalcar cluniforme – synonym of Mediocalcar versteegii
Mediocalcar compressicalcar – synonym of Mediocalcar bifolium
Mediocalcar conicum – synonym of Mediocalcar paradoxum latifolium
Mediocalcar crassifolium – synonym of Mediocalcar pygmaeum
Mediocalcar dependens – synonym of Mediocalcar agathodaemonis
Mediocalcar diphyllum – synonym of Mediocalcar bifolium
Mediocalcar doctersii – synonym of Mediocalcar versteegii
Mediocalcar erectum – synonym of Mediocalcar bifolium
Mediocalcar ericiflorum – synonym of Mediocalcar paradoxum latifolium
Mediocalcar filopedunculatum – synonym of Mediocalcar bifolium
Mediocalcar kaniense – synonym of Mediocalcar paradoxum robustum
Mediocalcar latifolium – synonym of Mediocalcar paradoxum latifolium
Mediocalcar lawesii – synonym of Mediocalcar versteegii amphigeneum
Mediocalcar longipes – synonym of Mediocalcar agathodaemonis
Mediocalcar luteococcineum – synonym of Mediocalcar agathodaemonis
Mediocalcar minjense – synonym of Mediocalcar agathodaemonis
Mediocalcar montanum – synonym of Mediocalcar bifolium
Mediocalcar monticola – synonym of Mediocalcar bifolium
Mediocalcar paradoxum latifolium
Mediocalcar paradoxum robustum
Mediocalcar ponapense – synonym of Mediocalcar paradoxum robustum
Mediocalcar pygmaeum Schltr. var. altigenum – synonym of Mediocalcar pygmaeum
Mediocalcar retusum – synonym of Mediocalcar bifolium
Mediocalcar rigidulum – synonym of Mediocalcar uniflorum
Mediocalcar robustum – synonym of Mediocalcar paradoxum robustum
Mediocalcar selebicum – synonym of Mediocalcar paradoxum robustum
Mediocalcar sepikanum – synonym of Mediocalcar uniflorum
Mediocalcar seranicum – synonym of Mediocalcar versteegii intermedium
Mediocalcar sigmoideum – synonym of Mediocalcar pygmaeum
Mediocalcar stenopetalum – synonym of Mediocalcar paradoxum robustum
Mediocalcar ternatense – synonym of Mediocalcar paradoxum robustum
Mediocalcar uniflorum Schltr. var. orientale – synonym of Mediocalcar uniflorum
Mediocalcar versteegii amphigeneum
Mediocalcar versteegii intermedium
Mediocalcar viridicoccineum – synonym of Mediocalcar stevenscoodei
Medusorchis notabilis – synonym of Habenaria notabilis
Mesodactylis wallichii – synonym of Apostasia wallichii
Microphytanthe bulbophylloides – synonym of Dendrobium bulbophylloides
Microphytanthe prorepens – synonym of Dendrobium nummularia
Microstylis arachnoidea – synonym of Malaxis arachnoidea
Microstylis atrata – synonym of Malaxis atrata
Microstylis atrobrachiata – synonym of Malaxis atrobrachiata
Microstylis bernaysii – synonym of Malaxis ophrydis
Microstylis brachycaulos – synonym of Malaxis brachycaulos
Microstylis brachyodonta – synonym of Malaxis brachyodonta
Microstylis breviscapa – synonym of Malaxis breviscapa
Microstylis caricoides – synonym of Malaxis caricoides
Microstylis carinatifolia – synonym of Malaxis carinatifolia
Microstylis carnosula – synonym of Malaxis ophrydis
Microstylis circea – synonym of Malaxis circea
Microstylis congesta – synonym of Malaxis ophrydis
Microstylis congesta (Lindl.) Rchb.f. var. fusca – synonym of Malaxis ophrydis
Microstylis curvatula – synonym of Malaxis curvatula
Microstylis cyanobrachia – synonym of Malaxis cyanobrachia
Microstylis dalatensis – synonym of Malaxis ophrydis
Microstylis decumbens – synonym of Malaxis decumbens
Microstylis diploceras – synonym of Malaxis diploceras
Microstylis distans – synonym of Malaxis distans
Microstylis dolichostachys – synonym of Malaxis dolichostachys
Microstylis dryadum – synonym of Malaxis dryadum
Microstylis epiphytica – synonym of Malaxis pseudoliparis
Microstylis euantha – synonym of Malaxis euantha
Microstylis fasciata – synonym of Malaxis fasciata
Microstylis fasciata – synonym of Malaxis fasciata concolor
Microstylis fasciata Schltr. var. concolor – synonym of Malaxis fasciata concolor
Microstylis fissa – synonym of Malaxis fissa
Microstylis floscularia – synonym of Malaxis floscularia
Microstylis fulva – synonym of Malaxis fulva
Microstylis fusca – synonym of Malaxis ophrydis
Microstylis gibbosa – synonym of Malaxis dryadum
Microstylis gibbsiae – synonym of Malaxis gibbsiae
Microstylis graciliscapa – synonym of Malaxis foliosa
Microstylis graminifolia – synonym of Malaxis graminifolia
Microstylis grandiflora – synonym of Malaxis grandiflora
Microstylis grandifolia – synonym of Malaxis grandifolia
Microstylis heliophoba – synonym of Malaxis undulata
Microstylis hydrophila – synonym of Malaxis hydrophila
Microstylis incurva – synonym of Malaxis incurva
Microstylis integrilabia – synonym of Malaxis integrilabia
Microstylis kempfii – synonym of Malaxis kempfii
Microstylis keysseri – synonym of Malaxis keysseri
Microstylis laevis – synonym of Malaxis laevis
Microstylis lamii – synonym of Malaxis lamii
Microstylis lata – synonym of Malaxis lata
Microstylis latifolia – synonym of Malaxis ophrydis
Microstylis latifolia (Sm.) J.J.Sm. var. fusca – synonym of Malaxis ophrydis
Microstylis latilabris – synonym of Malaxis latilabris
Microstylis latipetala – synonym of Malaxis latipetala
Microstylis laxa – synonym of Malaxis laxa
Microstylis ledermannii – synonym of Malaxis ledermannii
Microstylis leucodon – synonym of Malaxis leucodon
Microstylis longispica – synonym of Malaxis longispica
Microstylis maboroensis – synonym of Malaxis maboroensis
Microstylis macrophylla – synonym of Malaxis macrophylla
Microstylis macrotis – synonym of Malaxis macrotis
Microstylis megalantha – synonym of Malaxis megalantha
Microstylis melanophylla – synonym of Malaxis melanophylla
Microstylis micholitziana – synonym of Malaxis micholitziana
Microstylis microhybos – synonym of Malaxis microhybos
Microstylis moluccana – synonym of Malaxis moluccana
Microstylis moluccana J.J.Sm. var. sagittata – synonym of Malaxis moluccana
Microstylis nephroglossa – synonym of Malaxis nephroglossa
Microstylis nitida – synonym of Malaxis nitida
Microstylis nitida – synonym of Malaxis nitida cyclopensis
Microstylis nitida Schltr. var. cyclopensis – synonym of Malaxis nitida cyclopensis
Microstylis oligantha – synonym of Malaxis oligantha
Microstylis oligantha – synonym of Malaxis oligantha neuroglossa
Microstylis oligantha Schltr. var. neuroglossa – synonym of Malaxis oligantha neuroglossa
Microstylis olivacea – synonym of Malaxis olivacea
Microstylis oreocharis – synonym of Malaxis oreocharis
Microstylis paguroides – synonym of Malaxis paguroides
Microstylis pectinata – synonym of Malaxis pectinata
Microstylis pedicellaris – synonym of Malaxis pedicellaris
Microstylis petiolaris – synonym of Malaxis petiolaris
Microstylis producta – synonym of Malaxis producta
Microstylis protracta – synonym of Malaxis protracta
Microstylis protracta – synonym of Malaxis protracta
Microstylis protracta J.J.Sm. var. brevidens – synonym of Malaxis protracta
Microstylis pubicallosa – synonym of Malaxis pubicallosa
Microstylis quadridens – synonym of Malaxis quadridens
Microstylis retusa – synonym of Malaxis retusa
Microstylis retusa – synonym of Malaxis retusa brevis
Microstylis retusa J.J.Sm. var. brevis – synonym of Malaxis retusa brevis
Microstylis rhabdophylla – synonym of Malaxis rhabdophylla
Microstylis rhinoceros – synonym of Malaxis rhinoceros
Microstylis riparia – synonym of Malaxis riparia
Microstylis schumanniana – synonym of Malaxis schumanniana
Microstylis sciaphila – synonym of Malaxis sciaphila
Microstylis sciaphila – synonym of Malaxis sciaphila bismarckiensis
Microstylis sciaphila Schltr. var. bismarckiensis – synonym of Malaxis sciaphila bismarckiensis
Microstylis segaarensis – synonym of Malaxis segaarensis
Microstylis seleniglossa – synonym of Malaxis seleniglossa
Microstylis sordida – synonym of Malaxis xanthochila
Microstylis stenophylla – synonym of Malaxis cirrhiflora
Microstylis stenophylla Schltr. var. crispatula – synonym of Malaxis cirrhiflora
Microstylis stenostachys – synonym of Malaxis stenostachys
Microstylis stolleana – synonym of Malaxis stolleana
Microstylis torricellensis – synonym of Malaxis torricellensis
Microstylis trilobulata – synonym of Malaxis ophrydis
Microstylis tubulosa – synonym of Malaxis tubulosa
Microstylis umbonata – synonym of Malaxis umbonata
Microstylis undulata – synonym of Malaxis undulata
Microstylis verruculosa – synonym of Malaxis verruculosa
Microstylis vinicolor – synonym of Malaxis vinicolor
Microstylis vinosa – synonym of Malaxis vinosa
Microstylis wappeana – synonym of Malaxis wappeana
Microstylis warapussae – synonym of Malaxis warapussae
Microstylis wariana – synonym of Malaxis wariana
Microstylis wariana – synonym of Malaxis wariana oreogena
Microstylis wariana Schltr. var. oreogena – synonym of Malaxis wariana oreogena
Microstylis werneri – synonym of Malaxis werneri
Microstylis xanthochila – synonym of Malaxis xanthochila
Microstylis zippelii – synonym of Malaxis moluccana
Microtatorchis kaniensis – synonym of Microtatorchis javanica
Microtatorchis longissima – synonym of Microtatorchis multiflora
Microtatorchis triangulipetala
Microtatorchis wilhelminae – synonym of Microtatorchis multiflora
Mischobulbum lancilabium – synonym of Mischobulbum papuanum
Mitopetalum parviflorum – synonym of Tainia trinervis
Mitopetalum trinerve – synonym of Tainia trinervis
Monanthochilus chrysanthus – synonym of Sarcochilus chrysanthus
Monanthochilus iboensis – synonym of Sarcochilus iboensis
Monanthochilus uniflorus – synonym of Sarcochilus uniflorus
Monanthos agrostophylloides – synonym of Dendrobium agrostophylloides
Monanthos amblyornidis – synonym of Pseuderia amblyornidis
Monanthos corticicola – synonym of Dendrobium corticicola
Monanthos crassinervius – synonym of Dendrobium crassinervium
Monanthos crenatilabris – synonym of Dendrobium crenatilabre
Monanthos erectifolius – synonym of Dendrobium erectifolium
Monanthos integer – synonym of Dendrobium integrum
Monanthos isochiloides – synonym of Dendrobium isochiloides
Monanthos lamproglossus – synonym of Dendrobium lamproglossum
Monanthos macer – synonym of Dendrobium macrum
Monanthos obovatus – synonym of Dendrobium obovatum
Monanthos piestocaulos – synonym of Dendrobium piestocaulon
Monanthos planicaulis – synonym of Dendrobium planicaule
Monanthos procerus – synonym of Dendrobium procerum
Monanthos rhytidothece – synonym of Dendrobium rhytidothece
Monanthos subbilobatus – synonym of Dendrobium subbilobatum
Monanthos subserratus – synonym of Dendrobium subserratum
Monanthos vinosus – synonym of Dendrobium vinosum
Monanthos xanthothece – synonym of Dendrobium xanthothece
Monanthus poneroides – synonym of Dendrobium poneroides
Monochilus nervosus – synonym of Zeuxine nervosa
Monochilus vieillardii – synonym of Hetaeria oblongifolia
Monomeria digitata – synonym of Bulbophyllum digitatum
Monosepalum muricatum – synonym of Bulbophyllum muricatum
Monustes australis – synonym of Spiranthes sinensis
Mycaranthes bifalcis – synonym of Eria hawkesii
Mycaranthes hawkesii – synonym of Eria hawkesii
Mycaranthes leucotricha – synonym of Eria leucotricha
Mycaranthes stenophylla – synonym of Eria stenophylla