Grevillea robusta—Silky Oak—PROTEACEAE

Grevillea robusta

Link to Images on Flickr.

Habitat—Grows in subtropical to dry rainforest, wet sclerophyll forest, often on basaltic soils; on the coast and inland ranges.

Distribution—North from Coffs Harbour district in New South Wales and Queensland.

Description—Tree 8 to 40 m tall. Cultivated as ornamental tree, occasionally naturalized.

Local occurrences

Black Head, Black Head Flora Park, Brown's Creek Bicentennial Gardens, Diamond Beach, Diamond Beach LRF, Forster Cemetery, Forster/Tuncurry Streets, Goldens Road Wetlands, Great Lakes College-Forster Campus, Little Street, One Mile Beach, Queen Elizabeth Park Taree, Royal Botanic Gardens Sydney, Stephen Street Reserve, Tonie's Gully and Tuncurry Flora Park.

Leaves.— Compound, alternate, leaflets dissected–pinnate; 10 to 34 cm long, 9 to 15 cm wide, divided with 11—31 pinnae; pinnae simple or 2 to 4—fid, ultimate segments narrow—elliptic to triangular or ± linear, 0.5 to 5 cm long, 2 to 10 mm wide, lower surface exposed, subsericeous to pubescent.

Grevillea robusta
Grevillea robusta

Inflorescence—Erect, 0 to 4-branched, 12 to 15 cm long, secund; receptacle oblique. Perianth yellow—orange or rarely reddish, glabrous. Gynoecium stipitate, 21 to 28 mm long; style yellow—orange or rarely reddish, glabrous, pollen presenter an erect cone.

Flowering.—September to November

Fruit—Follicle glabrous

Ripe.—Late Summer.

Grevillea robusta