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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Ordo: Proteales

Familia: Proteaceae
Subfamilia: Grevilleoideae
Genus: Sphalmium
Species (1): S. racemosum

Sphalmium B.G.Briggs, B.Hyland & L.A.S.Johnson Austral J. Bot. 23: 165 (1975)

Note: This genus is incertae sedis, according to Weston and Barker (2006), as they could not assign it to a tribe in the subfamily.

Briggs, B.G., Hyland, B. & Johnson, L.A.S. (1975) Australian Journal of Botany 23: 165.
Weston, P.H. & Barker, N.P. 2006. A new suprageneric classification of the Proteaceae, with an annotated checklist of genera. Telopea 11(3): 314–344. Full article (PDF) Reference page.
The Plant List 2013. Sphalmium in The Plant List Version 1.1. Published on the internet. Accessed: 2014 Oct. 18. 2014. Sphalmium. Missouri Botanical Garden. Published on the internet. Accessed: 2014 Oct. 18.
International Plant Names Index. 2014. Sphalmium. Published online. Accessed: Oct 18 2014.

Sphalmium is a monotypic genus of flowering plants in the protea family.[1][2][3][5] The only species, Sphalmium racemosum, is a large forest tree. Common names include satin silky oak, mystery oak, Mt Lewis oak, poorman's fishtail oak and buff silky oak.[3][5]

The tree grows to 30 m (100 ft) or more. It is endemic to the upland rainforests of the wet tropics region of north-eastern Queensland, Australia.[2][3][5]

Botanists Barbara Briggs, Bernie Hyland and Lawrie Johnson named the new genus, updated the description and named the new species combination in 1975.[2][4] They based the new species combination name on Cyril T. White's 1939 description of Orites racemosa, now a synonym.[1]

White, Cyril T. (1939). "Orites racemosa". Proceedings of the Royal Society of Queensland. 50: 85.
Briggs, Barbara G.; Hyland, Bernie P.M.; Johnson, Lawrie A.S. (1975). "Sphalmium, a distrinctive genus of Proteaceae from north Queensland". Australian Journal of Botany. 23 (1). pp. 165–172, fig. 1. doi:10.1071/BT9750165.
Hewson, Helen J. (1995). "Sphalmium". In McCarthy, Patrick (ed.). Flora of Australia: Volume 16: Eleagnaceae, Proteaceae 1 (online version). Flora of Australia series. CSIRO Publishing / Australian Biological Resources Study. pp. 342–343, Figs 81, 159, Map 394. ISBN 978-0-643-05692-3.
"Sphalmium racemosum". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government. Retrieved 5 April 2013.
F.A. Zich; B.P.M Hyland; T. Whiffen; R.A. Kerrigan (2020). "Sphalmium racemosum". Australian Tropical Rainforest Plants, Edition 8. Commonwealth Scientific and Industrial Research Organisation (CSIRO). Retrieved 5 March 2021.

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