Dendrobium lacteum Kraenzl. 1894 SECTION Fugacia Photo by Copyright © W C Schraut and Orchids and More Website
Another Flower Photo courtesy of Wolfgang H. Bandisch, Photo By Rocky Roe Copyright © 1998, 1999 All rights reserved. And his Papua & New Guinea Orchid Species site
Inflorescence Photo by © Art Vogel

to
MID
Common Name The Milk-White Dendrobium
Flower Size 2" [3 to 5 cm]
Found in Papua and New Guinea at elevations of 40 to 900 meters on smooth barked tree trunks or on small branches near watercourses and swamps as a medium to large sized, hot to warm growing epiphyte with club shaped pseudobulbs that have reed like bases carrying a few, stalked, papery, pointed leaves that blooms soon after a 10 degree temperature drop in the mid summer and has a short, axillary, 2 to 3 flowered inflorescence that arise from the oval bract on a node near the apex of the canes and has a short lived flower, most often only for a single day.
Cited as synomonous with Dendrobium inaequale if so this name would take precedence , I have left separate for now
Synonyms Dendrobium coxii F.M. Bailey 1906; Dendrobium purissimum Kraenzl. 1910; Dendrobium purissimum Kraenzl. 1910; Dendrobium quinarium Rolfe 1901; Euphlebium lacteum (Kraenzl.) Rauschert 1983
References W3 Tropicos, Kew Monocot list , IPNI ; The Orchidaceae of German New Guinea Schlechter 1985; Lowland orchids of Papua New Guinea O'Byrne 1994 drawing/photo fide; Orchid Species Culture; Dendrobium Bakers 1996; Flora Malesiana Orchids of New Guinea Vol II Shuiteman and de Vogel 2002; The Dendrobiums H. P. Wood 2006; Malesian Orchid Journal Vol 3 2009 photo fide;
--------------------------------------------------------------------------------------------------------------------------