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Scale bar 10mm. Copyright CSIRO
Leaves and Flowers. Copyright CSIRO
10th leaf stage. Copyright CSIRO
Cotyledon stage, epigeal germination. Copyright CSIRO
Grevillea robusta A.Cunn. ex R.Br.
Brown, R. (1830) Prodromus Florae Novae Hollandiae - Suppl. 1: 24. Type: Ora orient., Moreton Bay, 1827, A. Cunningham..
Grevillea robusta R.Br. var. robusta, The Gardener's Chronicle ser. 3, 49: 376(1911), Type: ?. Stylurus robusta (A.Cunn. ex R.Br.) O.Deg., Flora Hawaiiensis Fam. 98: (1932), Type: ?. Grevillea umbratica Meisn., Prodromus 14(1): 381(1856), Type: In sylvis umbrosis siccis ad fl. Brisbane et Moreton Bay (A. Cunn!). Grevillea robusta var. compacta Anon., The Gardener's Chronicle ser. 3, 49: 376(1911), Type: Shown by Mr. R.B. Leach, Dulwich.
Southern Silky Oak; Warragarra; Silk Oak; Oak, Silky; Oak, Silk; Oak, Southern Silky; Silky Oak
Oak grain in the wood and a corresponding pattern in the inner blaze.
Oak grain in the twigs. Terminal buds and the underside of mature leaves densely clothed in prostrate white hairs. Compound leaf petioles clothed in prostrate, white hairs. Leaves about 10-27 cm long, leaflet blades entire or lobed about 3-9 cm long.
Cotyledons obovate about 14-16 x 8-11 mm, +/- 3-veined. First pair of leaves simple, margins usually lobed, occasionally entire. At the tenth leaf stage: leaf blade pinnatifid, each lobe +/- pungent; leaves sparsely clothed in pale, woolly hairs.
Distribution and Ecology
Endemic to Australia, occurs naturally in south-eastern Queensland and north-eastern New South Wales but is now widely cultivated and has become naturalized in NEQ on the Atherton Tableland. Altitudinal range in NEQ from 700-800 m. Grows on farmland and in rain forest regrowth.
This species is now cultivated around the world for the stunning display of orange flowers which attract birds and for its ease of culture and adaptability.