!Chelonistele sulphurea (Blume) Pfitzer 1907
Photo by © Eric Hunt
Another Flower showing variety crassifolia
Photos by Gary Ashley
Inflorescence in situ, Mount Kinabalu Borneo
Photo by Peter Maxwell
Northern hemisphere
Singapore cultivation 
Common Name Sulpher Yellow Chelonistele
Flower Size 1 1/4" [3.1 cm]
Found in pennisular Malaysia, Borneo, Sumatra, Java and the Philippines hill, lower montane moss, keranga, ridge oak/chestnut forests and subalpine shrubbery at elevations of 600 to 2700 meters as a medium sized, warm to cold growing epiphyte with swollen to slender pseudobulbs carrying 1 to 2 apical, narrowly lanceolate to obovate-lanceolate, acute, petiolate leaves that blooms in the spring on a erect, 8" [20 cm] long, several [7 to 15] flowered inflorescence with fragrant flowers arising out of a new pseudobulb growth.
The single leafed variety of this species is called var. sulphurea and is wide-spread and found at elevations of 600 to 2300 meters, the two leaved variety is called var. crassifolia and is only found on Sabah at elevations of 2100 to 2700 meters.
Synonyms Chelonanthera sulphurea (Rchb. f.) Blume 1825; Chelonistele crassifolia Carr 1935; Chelonistele cuneata (J.J.Sm.) Carr 1935; Chelonistele kutaiensis (J.J.Sm.) Carr 1935; Chelonistele perakensis (Rolfe) Ridl. 1924; Chelonistele pinniloba (J.J.Sm.) Carr 1935; Chelonistele pusilla (Ridl.) Ridl. 1924; Chelonistele sulphurea var. crassifolia (Carr) de Vogel 1984; Coelogyne beyrodtiana Schltr. 1915; Coelogyne croockewitii Teijsm. & Binn. 1853; Coelogyne cuneata J.J.Sm. 1931; Coelogyne decipiens Sander 1901; Coelogyne kutaiensis J.J.Sm. 1931; Coelogyne perakensis Rolfe 1908; Coelogyne pinniloba J.J.Sm. 1931; Coelogyne pusilla Ridl. 1897; Coelogyne ramosii Ames 1922; Coelogyne sulphurea Rchb. f. 1857; Pholidota pusilla (Ridl.) Kraenzl. 1907; Pleione croockewitii (Teijsm. & Binn.) Kuntze 1891; Pleione sulfurea (Blume) Kuntze 1891
References W3 Tropicos, Kew Monocot list , IPNI ; Bonplandia Rchb.f 1857 as Coelogyne sulphrea; Die Orchideen Von Java J.J.Smith 1905 as Coelogyne sulphurea; Die Orchideen Von Java Figuren Atlas J.J.Smith 1908 as Coelogyne sulphurea drawing fide; Die Orchideen Schlechter 1915 as Coelogyne sulphurea; Die Orchideen Schlechter 1915 as Coelogyne perakensis; Studies in the Family Orchidaceae Fascile 6 Ames 1920 as Coelogyne sulphurea; Atlas des Orchidees Cultivees Constantin 1920 as Coelogyne lurida not = C sulphurea drawing fide; Studies in the Family Orchidaceae Fascile 7 Ames 1922 as Coelogyne ramosii; AOS Bulletin Vol 32 No 5 1963 as Coelogyne sulphurea; Encyclopedia of Cultivated Orchids Hawkes 1965 photo ok; Encyclopedia of Cultivated Orchids Hawkes 1965 as Coelogyne sulpherea; Rudolf Schlechter Die Orchideen #1 1-4 tafel 1&2 Rudolph Schlechter 1971 as Coelogyne sulpherea photo ok; The Complete Writings on Philippine Orchids Vol 2 Quisumbing 1981 as C ramosii; Rudolf Schlechter Die Orchideen 3 Auflage Bd 1 Sonderabdruck aus Schlechter Lieferung 15 881 - 944 Brieger, Maatsch and Senghas 1984 as Coelogyne sulphurea; Manual of Cultivated Orchids Bechtel, Cribb & Laurent 1982; Orchidiana Philipiniana Vol 1 Valmayor 1984 as Coelogyne ramosii; Orchid Monographs Vol 1 De Vogel 1986 Drawing fide; Orchids of Java Comber 1990 photo fide; Orchids Travel By Air A Pictoral Safari Mulder, Mulder-Roelfsema and Schuiteman 1990 photo good; The Orchids of Penninsular Malaysia and Singapore Seidenfaden & Wood 1992 drawing fide; The Manual of Cultivated Orchids Bechtel, Cribb, Launert 1992 drawing/photo fide; Orchids of Malaya Segerback 1992 as C perakensis photos fide; The Plants of Mount Kinabalu Vol 2 Orchids Wood Beaman & Beaman 1993 photo fide; A Checklist of the Orchids of Borneo Wood & Cribb 1994 photo ok; A to Z of SE Asian Orchid Species O'Byrne 2001 photo fide; Orchids of Sumatra Comber 2001 photo fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 42 - 43 pg 2626 - 2762 Brieger 2001; Orchids of Sarawak Beeman & Wood 2001 photos fide; The Orchids of the Philippines Cootes 2001 photo fide; The Genus Coelogyne, A Synopsis Clayton 2002; Flora Malesiana Orchids of the Philippines Vol I Agoo, Shuiteman and de Vogel 2003; AOS Bulletin Vol 73 No 3 2004; AOS Bulletin Vol 74 No 10 2005 photo fide; Wild Orchids of the Cameron Highlands REACH 2009 photo fide; Wild Orchids of the Cameron Highlands REACH 2009 pg 170 photo good; AOS Bulletin Vol 79 #10 2010 photo fide; The Orchids of Mount Kinabalu Vol 2 Wood, Beaman, Lamb, Chu Lun and Beaman 2011 drawing/photo ok; Wild Orchids of Penninsular Malaysia Ong, O'Byrne, Yong & Saw 2011 photo fide; Malesian Orchid Journal Vol 9 2012 photo fide; AOS Bulletin Vol 86 #12 2017 photo fide;
--------------------------------------------------------------------------------------------------------------------------
