genus Grevillea - large genus of Australian shrubs and trees having usually showy orange or red flowersdicot genus, magnoliopsid genus - genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination family Proteaceae, protea family, Proteaceae - large family of Australian and South African shrubs and trees with leathery leaves and clustered mostly tetramerous flowers; constitutes the order Proteales grevillea - any shrub or tree of the genus Grevillea silk oak - any of several Australian timber trees having usually fernlike foliage and mottled wood used in cabinetry and veneering Grevillea robusta, silky oak - medium to tall fast-growing tree with orange flowers and feathery bipinnate leaves silky-hairy beneath; eastern Australia |