The flowering stem emerges from the end of the pseudobulb and is 10–25 mm (0.4–1 in) long with up to four resupinate, usually apricot-coloured , sometimes yellowish green flowers 25–30 mm (0.98–1.2 in) long and wide.

The labellum is white with a purplish tinge, about 10 mm (0.4 in) long and wide with three lobes.

[2][3] Dendrobium fleckeri was first formally described in 1937 by Herman Rupp and Cyril Tenison White and the description was published in The Queensland Naturalist.

[4][5] The specific epithet (fleckeri) honours Hugo Flecker, a physician, natural historian, and founding president of the North Queensland Naturalists' Club.

[6] The apricot cane orchid grows in trees, shrubs and boulders in mist forest between Mount Finnigan and Mount Fisher on Cape York Peninsula.