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Scientific classification edit
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Subfamily: Grevilleoideae
Genus: Sphalmium
(C.T.White) B.G.Briggs, B.Hyland & L.A.S.Johnson
S. racemosum
Binomial name
Sphalmium racemosum
(C.T.White) B.G.Briggs, B.Hyland & L.A.S.Johnson[1][2][3][4][5]

Orites racemosa C.T.White[1]

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]


  1. ^ a b c d White, Cyril T. (1939). "Orites racemosa". Proceedings of the Royal Society of Queensland. 50: 85.
  2. ^ a b c d 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.
  3. ^ a b c d 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.
  4. ^ a b "Sphalmium racemosum". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government. Retrieved 5 April 2013.
  5. ^ a b c d Hyland, B. P. M.; Whiffin, T.; Zich, F. A.; et al. (December 2010). "Factsheet – Sphalmium racemosum". Australian Tropical Rainforest Plants. Edition 6.1, online version [RFK 6.1]. Cairns, Australia: Commonwealth Scientific and Industrial Research Organisation (CSIRO), through its Division of Plant Industry; the Centre for Australian National Biodiversity Research; the Australian Tropical Herbarium, James Cook University. Retrieved 5 April 2013.CS1 maint: extra punctuation (link)