This member of the Rubiaceae family was given this name by Camilla Rose Huxley and Matthew H. P. Jebb in 2019. It is found on the Tukulanga-Tombena ridge in central Papua New Guinea, growing as an epiphyte with lots of water and little to some sun. The caudex can grow to 30 centimetres in diameter, the entire plant to 60 centimetres in height. The flowers are white. The genera name after Greek hydnon meaning 'tuber' and phyton meaning 'plant', after the swollen branches. The species is named after Tom Reeve, former agricultural officer at Laiagam in Enga Province of Papua New Guinea and orchidologist.

