Bulbophyllum drymoglossum is a perennial orchid growing epiphytically on trunks or lithophytically on rocks in hilly districts, with rhizomes being slender and creepy. Leaves appear singly on one node, each obovate, approximately 1cm long, and leathery. Flower stalks are filamentous, about 1cm long, each setting a single pale yellow flower. Sepals; approx. 8mm in length, side petals; approx. 4mm, lips; broadly lanceolate, shorter than the sepals, having a slight reddish-purple. Bloom time: May-July.