Grevillea banksii, known by various common names including Red silky oak, Dwarf silky oak, Banks' grevillea, Byfield waratah and, in Hawaii, Kahili flower or Kahili tree. It 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 Native to Queensland, it has been a popular garden plant for many years though has been superseded somewhat horticulturally by smaller and more floriferous hybrids. A white-flowered form G. banksii fo. albiflora is known as white silky oak. It is a tall, slender or spreading shrub, or small tree up to 7 m (23 ft) high. Its leaves are pinnate with 3-11 deeply divided, linear to lanceolate segments 5–10 cm (2–4 in) long and 1 cm wide, with curled-back margins. Flowers are bright red or creamy-white, in clusters up to 15 cm (6 in) long. It flowers for most of the year, but mainly in winter and spring.