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  10. ›Grevillea
Scarlet Grevillea
Plate 1 of 9. (c) alessandradalia, some rights reserved (CC BY-SA), uploaded by alessandradalia · via iNaturalist

Scarlet Grevillea

Grevillea banksii

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 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 Native to Queensland, it has been a popular garden plant for many years though has been superseded somewhat horticulturally by smaller and more floriferous hybrids.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...

Continue reading on Wikipedia

From the article Grevillea banksii on Wikipedia (CC BY-SA), quoted section by section

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Description

Grevillea banksii is an erect, bushy to spindly shrub or slender tree that typically grows to a height of 2–10 m (6 ft 7 in – 32 ft 10 in). It has mostly divided leaves with four to twelve narrowly elliptic to linear lobes 50–180 mm (2.0–7.1 in) long and 5–15 mm (0.20–0.59 in) 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 3–10 mm (0.12–0.39 in) long along a rachis 50–120 mm (2.0–4.7 in) long, and are creamy-white or bright scarlet to crimson. The pistil is 32–50 mm (1.3–2.0 in) long and usually glabrous. Flowering occurs from August to October and the fruit is a glabrous follicle 15–25 mm (0.59–0.98 in) long.

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Range & 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 Hawaiʻi and is an important woody weed in eastern Madagascar where it was introduced, with Acacia dealbata, for erosion control.

Wikipedia: “Distribution and habitat”

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Toxicity

The flowers and seed pods contain toxic hydrogen cyanide. The alkyl resorcinols in G. banksii and Grevillea 'Robyn Gordon' are responsible for contact dermatitis.

Wikipedia: “Toxicity and allergic reactions”

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How it is grown

Grevillea banksii is one of the most widely cultivated grevilleas and is a parent of hybrids including G. 'Robyn Gordon' and G. 'Superb', G. 'Moonlight', G. 'Misty Pink', G. 'Pink Surprise', and G. 'Ned Kelly'.

Wikipedia: “Use in horticulture”

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Where it lives

Recorded sightings

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geo-referenced records in GBIF, from museums, herbaria and field observers.

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In the stacks

Searching the stacks…

Every page naming Grevillea banksii in the Biodiversity Heritage Library →

This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 163372.