Lehnert, M. & Cámara-Leret, R. (9 September 2019), New species of scaly tree ferns (Cyatheaceae) from New Guinea, and new combinations for the family for Malesia. Kew Bulletin 74(3): 24 [online only] [comb. nov.]

basionym: Cyathea exilis Holttum legitimate

Brown, G.K. & Bostock, P.D. (December 2020), Appendix A: New names and name and status changes 2019 to 2020. Introduction to the Census of the Queensland Flora 2020: 7 [secondary reference]

nomenclatural synonym: Cyathea exilis Holttum legitimate

Council of Heads of Australasian Herbaria (7 July 2021), Australian Plant Census: - [secondary reference]

isonym: Alsophila exilis (Holttum) A.R.Field isonym

Council of Heads of Australasian Herbaria (7 July 2021), Australian Plant Census: - [nomenclatural synonym]

nomenclatural synonym of: Cyathea exilis Holttum legitimate

---