Banksia dentata L.F.

Species

Angiosperms > Proteales > Proteaceae > Banksia

Characteristics

Tree to 7 m tall, fire tolerant. Bark roughly tessellated. Stems tomentose, at length glabrescent. Leaves alternate, scattered; petiole 5-10 mm long; lamina undulate, narrowly obovate, 9-22 cm long, 2-9 cm wide, acute; margins slightly recurved, irregularly dentate; upper surface velvety, glabrescent; lower surface closely white-tomentose. Inflorescence 5-15 cm long; involucral bracts narrowly triangular to subulate on thick base, tomentose, persistent. Flowers cream to pale yellow, including style. Perianth 25-32 mm long including limb of 5 mm, closely pubescent to hirsute outside, sparsely hirsute inside above middle. Pistil slightly recurved, 31-46 mm long, glabrous; pollen presenter 1 mm long, scarcely distinguishable from style. Old flowers soon falling. Follicles commonly 30-60 but sometimes to 100, narrowly elliptic, 15-20 mm long, 4-8 mm high; valves semi-elliptic, smooth, velvety, glabrescent. Seed obovate, 18-21 mm long; seed body obliquely obovate, 10-12 mm long, 5-8 mm wide.
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Branched shrub or small, often crooked or stunted tree, 2-5 m by 10-20 cm, with sparse foliage; bark rough, tuberculate, flaky in rectangular pieces. Leaves sessile or nearly so, spiral or in whorls, cuneate-oblong, rounded-obtuse or sometimes retuse at the mucronate apex, tapering gradually towards the base, subcoriaceous, margin irregularly coarsely spiny-toothed to subentire, undulate and often slightly recurved, upper surface glabrous, undersurface white or slightly pale brownish, arachnoid-tomentose, except on the nerves, 10-25 by (2-)2.5-8 cm, nerves straight, numerous, at about right angles to the midrib, arched. Spikes oblong or cylindrical, covered by a thick, rusty, detersile wool when young, 6-10 cm long, 1-1½ cm thick in anthesis. Bracts and bracteoles tomentose. Perianth slender, silky, greenish-or creamish-yellow when open, 2½ cm. Style yellow, 3-4 cm. Fruit-cone oblong, c. 7-10 by 1½-2 cm, tomentose.
A small tree. In the forest it is often a straggling miss-shapen tree. It grows to 8 m tall and spreads to 4 m wide. The stem is erect. The bark is dark grey and rough. It has a widely branching crown. The leaves are coarsely toothed along the edge, blue green on top and whitish underneath. They are wedge shaped and 25 cm long by 3-6 cm wide. The flowers are yellow when young then turn brown, dry and hard. Flower spikes can be 15-20 cm long. The flowers are in cylindrical spikes. Seeds are black and winged. These are in large woody fruiting cones. The seed are expelled from the cone.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality -
Pollination -
Spread -
Mature width (meter) 4.0
Mature height (meter) 7.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
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Nitrogen fixer -
Photosynthetic pathway c3

Environment

Open savannah lands, savannah ridges or open grassland, in savannah forest adjoining rainforest, secondary forest, sometimes together with Pandanus, mainly in the lowland from the coast inland, also at 600 and up to 1200 m, sometimes gregarious (Lake Daviumbu, Astrolabe Range), mainly restricted to areas which are subject to a distinctly dry season, in New Guinea therefore specially in the southern part from Merauke beyond Moresby, also in the lower montane zone near Bulolo and Wau
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It is a tropical plant. It occurs in dry coastal areas. It is suited to warm areas in sandy acid soil. It often grows near the edges of swamps. It is drought and frost resistant. It can grow on poor soils. It suits hardiness zones 11-12.
Usually on seasonally moist sandy flats, sometimes among sandstone or quartzite rocks, in woodland; sometimes by creeks and in gorges.
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Hardiness (USDA) 10-12

Usage

The flowers at the yellow stage are broken off and the sweet sap which drips out is collected and eaten. CAUTION Cribb in Wild Foods in Australia suggests headaches and nausea can result from sucking too much bottle brush sap.
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Uses. Sap wood pale to straw, heart-wood deep red or red-brown, prettily marked. In Australia used for cabinet-work.
Uses environmental use fuel material medicinal social use wood
Edible nectars
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Seeds grow easily. Young seedlings transplant easily. Under good conditions young plants grow rapidly.
Mode -
Germination duration (days) 30 - 90
Germination temperacture (C°) 18 - 21
Germination luminosity -
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Optimum temperature (C°) -
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Productivity -

Images

Banksia dentata unspecified picture

Distribution

Banksia dentata world distribution map, present in Australia, Malaysia, and Papua New Guinea

Conservation status

Banksia dentata threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:703089-1
WFO ID wfo-0000559615
COL ID KL38
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Banksia procumbens Sirmuellera dentata Isostylis dentata Banksia dentata Banksia tomentosa