Flower Size 1 3/4" [4.25 cm]
Found in South Central China, Assam, Bangladesh, eastern Himalayas, India, Nepal, Sri Lanka, Andaman Islands , Myanamar, Thailand, Laos, Cambodia, Vietnam, Malaysia, Java and Sumatra in evergreen and in semi-deciduous and deciduous dry lowland forests and savana-like woodlands at elevations of sealevel to 1100 meters as a large sized, hot to warm growing epiphyte or lithophyte on open mossy rocks with very small pseudobulbs enveloped by leaf bases, with coriaceous, suberect, linear-ligulate, obscurely bilobed apically leaves that blooms on a 2 1/2' [75 cm] long, basal, pendant, laxly many [45] flowered, racemose inflorescence occuring in the spring. This species can easily be confused with C dayanum but differs in having a rounded lip edge and an hourglass shape in the center of the lip. This species is found in seasonal forests.
Credits of the text: http://www.orchidspecies.com