Dendrobium ionopus Reichb.f. 1882 SECTION Calcarifera Photo by Copyright © W C Schraut and Orchids and More Website
Another Color Form Photo by © Eric Hunt and His Orchid Website
To 
Common Name or MeaningFlower Size 1 1/4" [3 cm]
Found in the Myanamar and Malaysia [Philippines?] at elevations around 1200 meters as a medium to large sized, warm to cool growing epiphyte with fusiform, leafy stems carrying many deciduous, lanceolate, purplish below leaves and blooms on 1 to 3, pendant, to 12 flowered inflorescence arising on new and older leafless canes carrying long-lasting flower occuring in the fall and spring
D epidendropsis is cited as a synonym of this species and may be , mostly separated only on color differences but I have left them separate at this time.
Synonyms Callista ionopus (Rchb.f.) Kuntze 1891; Eurycaulis ionopus (Rchb.f.) M.A.Clem. 2003
References W3 Tropicos, Kew Monocot list , IPNI ; Orchids of Burma Grant 1895/1995; Orchid Species Culture; Dendrobium Bakers 1996; The Orchids of the Philippines Cootes 2001 photo fide; A to Z of South East Asian Orchid Species Vol 1 O'Byrne 2001 photo fide; Flora Malesiana Orchids of the Philippines Vol I Agoo, Shuiteman and de Vogel 2003; The Dendrobiums H. P. Wood 2006
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