Schwarz, O.K.A. (28 December 1927), Plantae novae vel minus cognitae Australiae tropicae. Repertorium Specierum Novarum Regni Vegetabilis 24(4-13): 101 [tax. nov.]

• Type: "...Port Darwin; 16 miles E, banks of Howard Creek (Bleeser no. 81 – Typus!)..."

Chippendale, G.M. (17 April 1972), Check List of Northern Territory Plants. Proceedings of the Linnean Society of New South Wales 96(4): 208 [basionym]

basionym of: Canthium schultzii (O.Schwarz) Chippend. legitimate

Reynolds, S.T. & Henderson, R.J.F. (11 December 2001), Vanguerieae A.Rich ex Dum. (Rubiaceae) in Australia, 2. Cyclophyllum Hook.f. Austrobaileya 6(1): 60 [basionym]

basionym of: Cyclophyllum schultzii (O.Schwarz) S.T.Reynolds & R.J.F.Hend. legitimate

---