Dendrobium amplum

Dendrobium amplum Lindl., Pl. Asiat. Rar. 1: 25 1830. (Syn: Bulbophyllum amplum (Lindl.) Rchb.f.; Callista ampla (Lindl.) Kuntze; Callista coelogyne (Rchb.f.) Kuntze; Dendrobium coelogyne Rchb.f.; Epigeneium amplum (Lindl.) Summerh.; Epigeneium annamense (Guillaumin) Seidenf.; Epigeneium coelogyne (Rchb.f.) Summerh.; Katherinea ampla (Lindl.) A.D.Hawkes; Katherinea coelogyne (Rchb.f.) A.D.Hawkes; Sarcopodium amplum (Lindl.) Lindl. & Paxton; Sarcopodium annamense Guillaumin; Sarcopodium coelogyne (Rchb.f.) Rolfe);

C. Himalaya to China (Yunnan, S. Guangxi) as per WCSP;

Assam; Bangladesh; China South-Central; China Southeast; East Himalaya; Laos; Myanmar; Nepal; Thailand; Tibet; Vietnam as per Catalogue of life;

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ORCHIDACEAE: Dendrobium amplum Lindl.:
Dendrobium amplum Lindl. in N.Wallich, Pl. Asiat. Rar. 1: 25 (1830).
Synonyms: Sarcopodium amplum (Lindl.) Lindl. & Paxton, Paxton’s Fl. Gard. 1: 155 (1850).

Bulbophyllum amplum (Lindl.) Rchb.f. in W.G.Walpers, Ann. Bot. Syst. 6: 244 (1861).
Callista ampla (Lindl.) Kuntze, Revis. Gen. Pl. 2: 654 (1891).
Katherinea ampla (Lindl.) A.D.Hawkes, Lloydia 19: 95 (1956).
Epigeneium amplum (Lindl.) Summerh., Kew Bull. 12: 260 (1957).
Dendrobium coelogyne Rchb.f., Gard. Chron. 1871: 136 (1871).
Callista coelogyne (Rchb.f.) Kuntze, Revis. Gen. Pl. 2: 654 (1891).
Sarcopodium coelogyne (Rchb.f.) Rolfe, Orchid Rev. 18: 238 (1910).
Sarcopodium annamense Guillaumin, Bull. Mus. Natl. Hist. Nat., II, 26:693 (1955).
Katherinea coelogyne (Rchb.f.) A.D.Hawkes, Lloydia 19: 95 (1956).
Epigeneium coelogyne (Rchb.f.) Summerh., Kew Bull. 12: 261 (1957).
Epigeneium annamense (Guillaumin) Seidenf., Dansk Bot. Ark. 34: 73 (1980).Family: ORCHIDACEAE
Distribution: China, India, Nepal, Mayanmar, Thailand and Vietnam
Current pic taken at Gloria Barretto Orchid Sanctuary, KFBG, Hong Kong.

Very strangely I dont agree with the synonym. This should have been retained as a separate genus Epigeneium amplum (Lindl.) Summerh.
Recently they have been merged with Dendrobium.