Holttum, R.E. (December 1963), Cyatheaceae. Flora Malesiana Series II 1(2): 115 [comb. nov.]

basionym: Gymnosphaera Blume legitimate nomenclatural synonym: Cyathea subg. Gymnosphaera (Blume) Tindale legitimate

Holttum, R.E. (1977), The family Thelypteridaceae in the Pacific and Australasia. Allertonia 1(3): 170-234 (256-258) [secondary reference]

Dong, S.Y. & Zuo, Z.Y. (2018), On the recognition of Gymnosphaera as a distinct genus in Cyatheaceae. Annals of the Missouri Botanical Garden 103(1): 12 [nomenclatural synonym]

nomenclatural synonym of: Gymnosphaera Blume legitimate

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