Cleisostoma williamsonii (Rchb.f.) Garay 1972SECTION Mitriformes Seiden 1975

Side View Photos by Ong Poh Teck and Biological Diversity Clearing House Mechanism Website

Another Flower Photo courtesy ofGreg and Kerri Steenbeeke and their Orkology Kreations Website

Part sunCoolSpring

Common Name Williamson's Cleisostom [British Soldier 1800's nephew of John Day] - In China Hong Hua Ge Ju Lan

Flower Size 1/4" [.7 cm]

A medium sized, cool growing epiphytic species found in Guangdong, Guangxi, Guizhou, Yunnan and Hainan China, Hong Kong, Assam India, eastern Himalayas, Bhutan, Andaman Islands, Myanmar, Thailand, Malaysia, Vietnam, Borneo, Java and Sumatra on dry rock faces in broad-leafed forests and hot dry valleys at elevations of 1100 to 2000 meters with a short to long, stout to slender, erect to pendulous, thick, fleshy, distichous, terete, acute leaves that blooms in the spring on an axillary, 10 to 12" [25 to 30 cm] long, pendant, racemose to paniculate, to 3 branched, several flowered inflorescence that has successive opening flowers occuring in the summer and early fall.

Synonyms Cleisostoma demangei (Guillaumin) Garay 1972; Cleisostoma elegans Seidenfadden 1975; Cleisostoma elongatum (Rolfe) Garay 1972 ; Cleisostoma hongkongense (Rolfe) Garay 1972; Cleisostoma sacculatum (Ridl.) Garay 1972; Echioglossum elegans (Seidenf.) Szlach. 2003; Echioglossum sacculatum (Ridl.) Szlach. 1995; Echioglossum williamsonii (Rchb.f.) Szlach. 1995?; Saccolabium sacculatum (Ridl.) Ridl. 1907; Sarcanthus demangei Guillaumin 1930; Sarcanthus elongatus Rolfe 1903; Sarcanthus flaccidus J.J.Sm. 1918; Sarcanthus hongkongensis Rolfe 1898; Sarcanthus sacculatus Ridl. 1896; *Sarcanthus williamsonii Rchb.f. 1865

References W3 Tropicos, Kew Monocot list , IPNI ; The Orchids of Burma Grant 1895/95 as Sarcanthus elegans; Atlas des Orchidees Cultivees Constantin 1920 as Sarcanthus williamsonii drawing good; The Orchids of Thailand Seidenfaden & Smitinand 1959 as Sarcanthus williamsonii drawing; The Orchids of Thailand Seidenfaden & Smitinand 1959 as Sarcanthus sacculatus drawing; Orchid Genera in Thailand Cleisostoma Seidenfaden 1975; Indian Orchids A Guide to IDentification and Culture Vol 2 Pradhan 1979 as C elegans; Indian Orchids A Guide to IDentification and Culture Vol 2 Pradhan 1979 drawing ok; Die Orchideen lieferung 21 Schlechter/Brieger 1989 photo fide; Orchids of Java Comber 1990; The Orchids of Penninsular Malaysia and Singapore Seidenfaden & Wood 1992 drawing fide; A Checklist of the Orchids of Borneo Wood & Cribb 1994 as C williamsonii; Native Orchids of China in Colour Singchi, Zhanhuo and Yibo 1999 photo fide as C williamsonii; Lindlyana Vol 15 No 4 2000 as C williamsonii; A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2001 as C elegans photo ok; Orchids of Sumatra Comber 2001; Orchids of Sarawak Beeman & Wood 2001; Orchids of Bhutan Pearce & Cribb 2002 as C williamsonii; A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2005 photo ok; A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2005 as C elegans photo ok; A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2005 photo ok; Native Orchids From Gaoligongshan Maountains, China Xiaohua, Xiaodong and Xiaochun 2009 photo fide as C williamsonii; Orchids of India A Glimpse Misra 2007; Orchids of India A Glimpse Misra 2007 as Echioglossum williansonii; Flora of China Vol 25 Zhengyi, Raven & Deyuan 2009; Mille et Une Mini Orchideees Roguenant 2009 as C arietinum photo fide; Flora of China Vol 25 Illustrations Zhengyi, Raven & Deyuan 2010 drawing ok; The Atlas of Wild Orchids in Hainan Island, China Shenyan and Junmei 2010 photo ok; The Wild Orchids in Yunnan Xu Xiang Ye & Liu 2010 photos HMM; Malesian Orchid Journal Vol 7 2011 drawing/photoWild Orchids of Penninsular Malaysia Ong, O'Byrne, Yong & Saw 2011 photo fide; The Wild Orchids of Hong Kong Barretto, Cribb and Gale 2011 drawing/photo fide; A to Z of South East Asian Orchid Species Vol 2 O'Byrne 2011 photo fide; Malesian Orchid Journal Vol 9 2012 photo fide; Taiwania 60(3):107-116, 2015 - New species of the genus Cleisostoma in the flora of Vietnam Averyanov, Tich and Canh

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