Brown, R. (27 March 1810), Prodromus florae Novae Hollandiae et insulae Van-Diemen, exhibens characteres plantarum quas annis 1802-1805: 348 [tax. nov.]

• Type: (T.) v.v.

Gardner, C.A. (1930), Part I. Pteridophyta-Proteaceae. Enumeratio Plantarum Australiae Occidentalis: 3 [secondary reference]

Dunlop, C.R. (1987), Checklist of the Vascular Plants of the Northern Territory. Technical Report: Conservation Commission of the Northern Territory 26: 4 [secondary reference]

Hill, K.D. (30 September 1992), A preliminary account of Cycas (Cycadaceae) in Queensland. Telopea 5(1): 202 [secondary reference]

• Type: R.Brown(holo BM, Bennett's numbering 3106 p.p., no original label, photo seen). Probably collected on 3-4 Dec 1802 from Bountiful Island, near Mornington Island in the Gulf of Carpentaria (Groves & Moore 1989). Recent collections on that island have included this taxon (Clarkson 7649).

Jones, D.L. (1993), Cycads Of The World: 128 [secondary reference]

Robson, Peter J. (1993), Checklist of Australian Trees: alphabetical listings of common and scientific names: - [secondary reference]

common name: Zamia Palm [n/a]

Hill, K.D. (14 November 1996), A taxonomic revision of the genus Cycas (Cyadaceae) in Australia. Telopea 7(1): 30 [secondary reference]

Hill, K.D. in McCarthy, P.M. (ed.) (1998), Cycadaceae. Flora of Australia 48: 614-615, Map 549 [secondary reference]

Laubenfels, D.J. de & Adema, F. (1998), A taxonomic revision of the genera Cycas and Epicycas gen.nov. (Cycadaceae). Blumea 43(2): 363 [secondary reference]

taxonomic synonym: Cycas brunnea K.D.Hill legitimate taxonomic synonym: Cycas couttsiana K.D.Hill legitimate taxonomic synonym: Cycas platyphylla K.D.Hill legitimate taxonomic synonym: Cycas canalis subsp. carinata K.D.Hill legitimate taxonomic synonym: Cycas orientis K.D.Hill legitimate taxonomic synonym: Cycas arnhemica K.D.Hill legitimate taxonomic synonym: Cycas desolata P.I.Forst. legitimate taxonomic synonym: Cycas yorkiana K.D.Hill legitimate taxonomic synonym: Cycas tuckeri K.D.Hill legitimate taxonomic synonym: Cycas semota K.D.Hill legitimate taxonomic synonym: Cycas maconochiei Chirgwin & K.D.Hill legitimate taxonomic synonym: Cycas badensis K.D.Hill legitimate taxonomic synonym: Cycas ophiolitica K.D.Hill legitimate pro parte taxonomic synonym: Cycas pruinosa Maconochie legitimate

• Comment: 'It would appear that C. angulata is more widespread than has been realized. In this connection Hill (1992, 1994, 1996) has recently proposed about a dozen new species and several subspecies for populations within the range of C. armstrongii and C. media that correspond closely to C. angulata. He relies on distinctions that tend to be unreliable, but are often selected for horticultiral purposes....For the time being we must place these species in synonymy pending further testing of their validity.' APNI note: this is a notoriously difficult family to revise. Some of Hill's species (highlighted by de Laubenfels in this article) ARE very difficult to distinguish both in herbarium specimens and in the field. Unfortunately it does seem that this species complex needs more work. The de Laubenfels revision probably overly applies a very wide species concept, while Hill's revisions may reflect a much narrower species complex than in current use in plant taxonomy / systematics both in Australia and overseas. This is the continuing taxonomic argument between 'lumpers and splitters' referred to by Hill and Osbourne (ix, 2001). Finding a consensus solution is not always possible.

Moore, P. (2005), A guide to plants of inland Australia: 102 (photo),103 (map) [secondary reference]

Council of Heads of Australasian Herbaria (2006), Australian Plant Census: - APC [secondary reference]

pro parte misapplication: Cycas brunnea K.D.Hill legitimate by Hill, K.D. in McCarthy, P.M. (ed.) (1998), Cycadaceae. Flora of Australia 48: 614, Map 548

• APC Comment: De Laubenfels & Adema, Blumea 43(2): 351-400 (1998) took a very much broader view of C. angulata than did Hill (1992, 1994, 1996) and Forster (1995) and included in synonymy C. ophiolitica, C. platyphylla, C. couttsiana, C. brunnea, C. arnhemica, C. orientis, C. canalis subsp. carinata, C. desolata, C. badensis, C. maconochiei, C. semota, C. tuckeri, and C. yorkiana. All are here maintained as distinct.
• APC Dist.: NT, Qld

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