Cleisostoma williamsonii (Rchb.f.) Garay, Bot. Mus. Leafl. 23: 176 1972. (syn: Cleisostoma demangei (Guillaumin) Garay; …………………………);
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Bhutan to S. China and Malesia: Andaman Is., Assam, Borneo, Cambodia, China South-Central, China Southeast, East Himalaya, Hainan, Jawa, Laos, Malaya, Maluku, Myanmar, Nicobar Is., Philippines, Sulawesi, Sumatera, Thailand, Vietnam as per POWO;
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Common name: Elegant Closed-Mouth Orchid
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ORCHIDACEAE Juss. Fortnight: Cleisostoma williamsonii (Rchb.f.) Garay from Hong Kong, PKS-195 : Attachments (3). 3 posts by 3 authors.
Cleisostoma williamsonii (Rchb.f.) Garay, Bot. Mus. Leafl. 23: 176 (1972).

Synonyms:
Sarcanthus williamsonii Rchb.f., Hamburger Garten- Blumenzeitung 21: 353 (1865).
Echioglossum williamsonii (Rchb.f.) Szlach., Fragm. Florist. Geobot., Suppl. 3: 137 (1995).
Sarcanthus sacculatus Ridl., J. Linn. Soc., Bot. 32: 368 (1896).
Sarcanthus hongkongensis Rolfe, Bull. Misc. Inform. Kew 1898: 198 (1898).
Sarcanthus elongatus Rolfe, J. Linn. Soc., Bot. 36: 36 (1903).
Saccolabium sacculatum (Ridl.) Ridl., Mat. Fl. Malay. Penins. 1: 163 (1907).
Sarcanthus weberi Ames, Orchidaceae 5: 252 (1915).
Sarcanthus flaccidus J.J.Sm., Bull. Jard. Bot. Buitenzorg, II, 26: 107 (1918).
Sarcanthus demangei Guillaumin, Bull. Soc. Bot. France 77: 329 (1930).
Cleisostoma demangei (Guillaumin) Garay, Bot. Mus. Leafl. 23: 171 (1972).
Cleisostoma elongatum (Rolfe) Garay, Bot. Mus. Leafl. 23: 171 (1972).
Cleisostoma hongkongense (Rolfe) Garay, Bot. Mus. Leafl. 23: 172 (1972).
Cleisostoma sacculatum (Ridl.) Garay, Bot. Mus. Leafl. 23: 174 (1972).
Cleisostoma weberi (Ames) Garay, Bot. Mus. Leafl. 23: 175 (1972).
Cleisostoma elegans Seidenf., Dansk Bot. Ark. 29(3): 46 (1975).
Echioglossum sacculatum (Ridl.) Szlach., Fragm. Florist. Geobot., Suppl. 3: 137 (1995).
Echioglossum elegans (Seidenf.) Szlach., Ann. Bot. Fenn. 40: 68 (2003).
Distribution: Bhutan to S. China and Malesia


so many beautiful species of Cleisostoma …love it all 🙂


 


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References:
POWO  The Plant List  Flowers of India