It has thin, wiry stems with stiff leaves and mostly white or cream-coloured flowers singly or in pairs in leaf axils.

Dendrobium lobbii is a terrestrial, perennial, herb which forms small clumps.

[2] Dendrobium lobbii was first formally described in 1853 by Johannes Elias Teijsmann and Simon Binnendijk from a specimen sent from Singapore and the description was published in Natuurkundig Tijdschrift voor Nederlandsch Indië.

[3][4] The specific epithet (lobbii) honours Thomas Lobb who collected the type specimen.

It is found in Thailand, Vietnam, Borneo, the Malay Peninsula, the Philippines, Sulawesi, Sumatra, New Guinea, the Solomon Islands and northern Australia where it occurs in Arnhem Land and the Cape York Peninsula as far south as Cardwell.