Grevillea banksii
Grevillea banksii, commonly known as Banks' grevillea, Byfield waratah, red flowered silky oak and dwarf silky oak, and in Hawaii as kāhili flower, is a species of flowering plant in the family Proteaceae and is endemic to Queensland. It is an erect shrub or slender tree with divided leaves with four to twelve narrow lobes, and creamy white to bright scarlet and yellow flowers. Description. "Grevillea banksii" is an erect, bushy to spindly shrub or slender tree that typically grows to a height of . It has mostly divided leaves with four to twelve narrowly elliptic to linear lobes  long and wide with the edges turned down or rolled under. The flowers are arranged in more or less cylindrical groups near the ends of branches, each flower on a pedicel long along a rachis long, and are creamy-white or bright scarlet to crimson. The pistil is long and usually glabrous. Flowering occurs from August to October and the fruit is a glabrous follicle long. Taxonomy. "Grevillea banksii" was first formally described in 1810 by the botanist Robert Brown in "Transactions of the Linnean Society of London". The specific epithet ("banksii") honours Sir Joseph Banks. Distribution and habitat. Banks ' grevillea is mostly found on the Queensland coast from Ipswich to Yeppoon, but sometimes further inland. It mostly grows in woodland and forest, usually in flatter places. The species has also been introduced to Hawai'i and is an important woody weed in eastern Madagascar where it was introduced, with "Acacia dealbata", for erosion control. Use in horticulture. "Grevillea banksii" is one of the most widely cultivated grevilleas and id a parent of hybrids including "G." 'Robyn Gordon' and "G. 'Superb', "G." 'Misty Pink', "G". 'Pink Surprise', and "G." 'Ned Kelly'. Toxicity and allergic reactions. The flowers and seed pods  contain toxic hydrogen cyanide. The alkyl resorcinols in "G. banksii" and "Grevillea" 'Robyn Gordon' are responsible for contact dermatitis.