Grevillea banksii, known by various common names including Red silky oak, Dwarf silky oak, Banks’ grevillea, Kahili tree is a plant of the large genus Grevillea in the diverse family Proteaceae. Native to Queensland, it has been a popular garden plant for many years though has been superseded somewhat horticulturally by smaller and more floriferous hybrids.
Grevillea is a diverse genus of about 360 species of evergreen flowering plants in the protea family Proteaceae, native to rainforest and more open habitats in Australia, New Guinea, New Caledonia and Indonesia. It was named in honour of Charles Francis Greville. The species range from prostrate shrubs less than 50 cm [20 in] tall to trees 35 m [115 ft] tall.
Common names include grevillea, spider flower, silky oak, bottle brush and toothbrush plant. Closely related to the genus Hakea, the genus gives its name to the subfamily Grevilleoideae.
They are good bird-attracting plants, honeyeaters in particular are common visitors. They are also used as food plants by the larvae of some Lepidoptera species including the Dryandra Moth and the Pieris rapae or the Small White.