Burman, N.L. (1768), Flora Indica: cui accedit series zoophytorum indicorum, nec non Prodromus Florae Capensis: 147 [tax. nov.]

• Type: "Habitat in India."

Hooker, J.D. (29 December 1859), Introductory Essay. The botany of the Antarctic voyage of H.M. Discovery ships Erebus and Terror. III. Flora Tasmaniae 2(11): xlii [secondary reference]

Domin, K. (1928), Beitrage zur Flora und Pflanzengeographie Australiens. Bibliotheca Botanica 22(89): 944 [secondary reference]

taxonomic synonym: Sida carpinifolia L.f. nom. illeg.

Specht, R.L. in Specht, R.L. & Mountford, C.P. (ed.) (August 1958), The Gymnospermae and Angiospermae collected on the Arnhem Land Expedition. Records of the American-Australian Scientific Expedition to Arnhem Land No. 3 Botany and Plant Ecology: 259 [secondary reference]

Borssum Waalkes, J. van (1966), Malesian Malvaceae revisited. Blumea 14(1): 186 [secondary reference]

• Lectotype: "Java, s. coll. s.n. (Lectotype: G)"

Chippendale, G.M. (17 April 1972), Check List of Northern Territory Plants. Proceedings of the Linnean Society of New South Wales 96(4): 248 [secondary reference]

Green, J.W. (1985), Census of the Vascular Plants of Western Australia Edn. 2: 113 [secondary reference]

taxonomic synonym: Sida carpinifolia L.f. nom. illeg.

Ross, E.M. in Stanley, T.D. & Ross, E.M. (1986), Malvaceae. Flora of South-eastern Queensland 2: 74, Fig. 10J [secondary reference]

common name: Spinyhead Sida [n/a]

Dunlop, C.R. (1987), Checklist of the Vascular Plants of the Northern Territory. Technical Report: Conservation Commission of the Northern Territory 26: 47 [secondary reference]

Fryxell, P.A. (1987), Sidus Sidarum VII. - The genus Sida (Malvaceae) in Australia. Sida; contributions to botany 12(1): 23 [secondary reference]

Wheeler, J.R. in Wheeler, J.R. (ed.) (1992), Malvaceae. Flora of the Kimberley Region: 226-227, Fig. 63A [secondary reference]

taxonomic synonym: Sida carpinifolia L.f. nom. illeg. common name: Spinyhead Sida [n/a]

Du Puy, D.J. & Telford, I.R.H. (1993), Malvaceae. Flora of Australia 50: 154 [secondary reference]

misapplication: Sida spinosa L. legitimate by Ridley, H.N. (1906), The botany of Christmas Island. Journal of the Straits Branch of the Royal Asiatic Society 45: 174

Hyland, B.P.M., Gray, B. & Elick, R.W. in Cooper, W.E. & Cooper, W.T. (1994), Appendix I: Provisional Species List. Fruits of the Rainforest: 306 [secondary reference]

Williams, D.G. (1994), Vegetation and flora of the Cocos (Keeling) Islands. Atoll Research Bulletin 404: 23 [secondary reference]

Hyland, B.P.M., Whiffin, T.P., Christophel, D.C., Gray, B., Elick, R.W. & Ford, A.J. (1999), Australian tropical rain forest trees and shrubs. Australian tropical rain forest trees and shrubs: 72 [secondary reference]

Harden, G.J. & Murray, L.J. in Harden, G.J. & Murray, L.J. (ed.) (2000), Flora of New South Wales Supplement 1: 38 [secondary reference]

common name: Spinyhead Sida [n/a]

Cooper, W.E. & Cooper, W.T. (2004), Fruits of the Australian Tropical Rainforest: 280 [secondary reference]

taxonomic synonym: Sida carpinifolia L.f. nom. illeg. common name: Southern Sida [n/a] common name: Spinyhead Sida [n/a]

Council of Heads of Australasian Herbaria (2008), Australian Plant Census: - [secondary reference]

misapplication: Sida carpinifolia L.f. nom. illeg. by Beard, J.S. in Beard, J.S. (ed.) (1965), Descriptive Catalogue of West Australian Plants: 63 misapplication: Sida acuta subsp. carpinifolia (L.f.) Borss.Waalk. legitimate by Wheeler, J.R. in Wheeler, J.R. (ed.) (1992), Malvaceae. Flora of the Kimberley Region: 226

• APC Comment: The infraspecific identity of the material from CoI and ChI is uncertain.
• APC Dist.: WA (naturalised), CoI, ChI, NT (naturalised), Qld (naturalised), NSW (naturalised)

Council of Heads of Australasian Herbaria (2012), Australian Plant Census: - APC [secondary reference]

nomenclatural synonym: Sida acuta Burm.f. subsp. acuta legitimate taxonomic synonym: Sida carpinifolia L.f. nom. illeg. taxonomic synonym: Sida acuta subsp. carpinifolia (L.f.) Borss.Waalk. legitimate pro parte misapplication: Sida rhombifolia L. legitimate by Laing, R.M. (1915), A revised list of the Norfolk Island flora, with some notes on the species. Transactions and Proceedings of the New Zealand Institute 47: 30 misapplication: Sida spinosa L. legitimate by Ridley, H.N. (1906), The botany of Christmas Island. Journal of the Straits Branch of the Royal Asiatic Society 45: 174

• APC Comment: Treated as Sida acuta subsp. acuta in WA and as S. acuta subsp. carpinifolia on NI by P.S.Green in A.J.G.Wilson (ed.), Fl. Australia 49: 112 (1994). Use of the names Sida carpinifolia by J.S.Beard (ed.), Descr. Cat. West Austral. Pl. 63 (1965) and Sida acuta subsp. carpinifolia by J.R.Wheeler in J.R.Wheeler (ed.) et al., Fl. Kimberley Region 227 (1992) are considered to be misapplications to Sida acuta subsp. acuta.
• APC Dist.: WA (naturalised), CoI, ChI, NT (naturalised), Qld (naturalised), NSW (naturalised), NI (naturalised)

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