Robust epiphyte and epilith. Pseudobulbs cylindrical, to 1 m long, erect, slender, sheaths covered with black hairs. Leaves several, lanceolate to ovate, to 10 cm long, to 3 cm wide, persistent. Flowers 2 or 3, to 8 cm wide, white. Sepals ovate. Petals almost round, much wider than sepals. Labellum obovate, spurred, funnel-shaped at base, margins wavy and toothed, with orange or red lines in throat; spring to summer.
Occasionally cultivated are:
D. bellatulum Rolfe, which is a compact epiphyte with creamy white flowers and a large labellum that is orange on the bilobed tip and scarlet in the throat.
D. cariniferum Rchb. f., which is a medium sized epiphyte with white to creamy flowers with keeled sepals and orange labellum throat.
D. dearei Rchb. f., which is a robust epiphyte with white flowers and 3-lobed labellum that is yellow or greenish in the throat.
D. draconis Rchb. f., which is a robust epiphyte with white flowers and a spurred labellum that has a reddish throat.
D. formosum Lindl., which is similar to D. infundibulum but has larger flowers with a shorter spur.
D. sanderae Rolfe, which is a robust epiphyte with white flowers and 3-lobed labellum with red or purple stripes at base and on side lobes.
D. schuetzei Rolfe, which is a medium sized epiphyte with white flowers and 3-lobed labellum with green blotches at base and on side lobes.
D. trigonopus Rchb. f., which is a medium sized epiphyte with yellow flowers and 3-lobed labellum with greenish, brown-striped side lobes.
Burma and Thailand.
Source: (2005). Orchidaceae. In: . Horticultural Flora of South-eastern Australia. Volume 5. Flowering plants. Monocotyledons. The identification of garden and cultivated plants. University of New South Wales Press.
