Dendrobium crassinervium J.J.Sm., Repert. Spec. Nov. Regni Veg. 12 (1913) 114; Nova Guinea 12, 4 (1916) 302, t. 110, fig. 197.
Type: Gjellerup 843 (holo BO).
Stems strongly laterally compressed, 5 mm wide, internodes 1.3-1.7 cm long. Leaf sheaths 0.7-0.8 cm wide, transversely minutely rugulose. Leaves linear-oblong, 4.5 by 1.45-1.65 cm, rigidly coriaceous, base oblique, apex broadly obtuse-truncate, retuse. Inflorescences lateral, 1-flowered, very short. Pedicel and ovary 0.5 cm long. Flower c. 1.5 cm long. Dorsal sepal 1.1 cm by 6.3 mm; mentum 0.66 cm long, obtuse, retuse. Petals 1.1 cm by 5 mm. Lip 3-lobed, 0.85 by 0.45 cm, when flattened 0.5 cm wide, auriculate-bilobulate at the base, midlobe pubescent-papillose, 0.37 by 0.46 cm. Column 0.3 cm long; column-foot 0.63.
(after Smith, 1916).
Colours: Not recorded.
Habitat: Epiphyte in hill forest. Altitude 500 m.
Flowering time in the wild: November.
Distribution: New Guinea (endemic).
Distribution in New Guinea: Papua (Jayapura Regency).
Notes: Dendrobium crassinervium appears to be related to Dendrobium agrostophylloides, but has shorter and relatively broader leaves.
Cultivation: Warm growing epiphyte.