Banksia grandis Willd.

Species

Angiosperms > Proteales > Proteaceae > Banksia

Characteristics

Tree to 10 m, in coastal areas sometimes a shrub, fire tolerant. Bark thick, rugose. Stems stout, tomentose, glabrescent. Leaves: petiole 10-35 mm long; lamina pinnatisect with 8-12 large, triangular lobes each side, obovate-cuneate, 10-45 cm long, 3-11 cm wide, truncate; margins recurved; upper surface tomentose, glabrescent; lower surface tomentose, glabrescent except fine wool in pits. Inflorescence 10-40 cm long, 7-9 cm wide at flowering; involucral bracts to 25 mm long, tomentose, falling after flowering. Flowers pale yellow; upper flowers often with turquoise or grey tinge; styles cream. Perianth 26-35 mm long including limb of 4-5 mm, hirsute both sides with glabrous limb. Pistil 35-40 mm long, glabrous; pollen presenter slightly thickened, 1-1.5 mm long. Old flowers soon falling. Follicles many in a massive cone, elliptic, 17-25 mm long, 3-10 mm high, 6-12 mm wide; valves smooth but groove wrinkled, tomentose. Seed obovate-cuneate, 32-38 mm long; seed body obovate, 12-16 mm long, 7-9 mm wide, smooth inside, somewhat rugose outside.
More
A tree. It grows up to 5-10 m high and spreads 3-8 m wide. The leaves are large. They can be 50 cm long. They are held in clumps. They have triangular lobes arranged along a central spine. It has large flower spikes. They are pale yellow and 40 cm long.
Life form -
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality -
Pollination -
Spread -
Mature width (meter) 3.0 - 8.0
Mature height (meter) 1.5 - 10.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

It grows in SW regions of Western Australia. It suits temperate and semiarid regions. It can grow on alkaline soils. It can stand light frosts. It suits hardiness zones 9-11.
More
Grows in sand on the coastal plain, in woodland and kwongan; common in laterite in the Jarrah forest of the Darling Plateau.
Light 7-9
Soil humidity 1-3
Soil texture 1-2
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-10

Usage

The flowers are soaked in water to produce a sweet drink. The nectar is also soaked directly from the plant. It also has edible grubs.
Uses environmental use material medicinal
Edible nectars
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Plants are grown from seed.
Mode seedlings
Germination duration (days) 30 - 90
Germination temperacture (C°) 18 - 21
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -7
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Banksia grandis unspecified picture

Distribution

Banksia grandis world distribution map, present in Australia

Conservation status

Banksia grandis threat status: Near Threatened

Identifiers

LSID urn:lsid:ipni.org:names:703105-1
WFO ID wfo-0000559649
COL ID KL4J
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Sirmuellera grandis Banksia grandis