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Species profile—Banksia plagiocarpa


Plantae (plants) → Equisetopsida (land plants) → ProteaceaeBanksia plagiocarpa

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Species details

Plantae (plants)
Equisetopsida (land plants)
Scientific name
Banksia plagiocarpa A.S.George
WildNet taxon ID
Alternate name(s)
Dallyachys blue banksia
Hinchinbrook banksia
blue banksia
Nature Conservation Act 1992 (NCA) status
Conservation significant
Pest status
Short Notes
BRI 337312 (Holotype), 337627, 337966 (carpological) (Isotype), status annotated by author
Banksia plagiocarpa is a shrub growing to 5m tall. The bark is fissured, corky and grey-brown. New growth is red and velvety, becoming hairless after 2-3 years. The leaves are arranged alternately along the stems. Leaves are lance-shaped to narrowly obovate (reverse egg-shaped), with bluntly serrate to entire margins that curve under and measure 8-20cm long by 6-17mm wide. The upper leaf surface is covered in dense, rust coloured hairs, becoming hairless with age. The lower leaf surface is also densely hairy, becoming hairless on the veins.
The flowers are pale blue-grey to mauve in late bud, with the limb a pale pink-brown colour. All flowers become dull yellow when the flower opens and old flowers soon fall from the plant. About 60 upward-turned follicles (a dry fruit) occur. The follicles are narrowly elliptic in shape, 12-16mm long, 5-10mm high and 5-8mm wide. The seeds are inversely egg-shaped and 15-17mm long. (George 1999)
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Banksia plagiocarpa is found on Hinchinbrook Island and the adjacent mainland in north-eastern Queensland. (George 1999; Herbrecs 2008)
Distributional limits
-18.340125, 146.1261048
-18.4901251, 146.3261049
Range derivation
Range derived from extent of the taxon's verified records
Banksia plagiocarpa occurs in low closed shrubland. It grows in sandy loam or clay-loam soils on rocky granite slopes and outcrops. (George 1999)
Banksia plagiocarpa is probably fire tolerant. Some follicles open after 2-3 years, but others remain closed until they are burnt by fire. It sprouts shoots from either the trunk or large branches after fire. Flowers of this species provide nectar for a wide range of invertebrate and vertebrate animals. (George 1999; Williams et al. 2005)
Banksia plagiocarpa flowers from February to July. (George 1999)
Contributors: Ailsa Holland, Mellisa Mayhew 27/01/2009
George, A.S. in Wilson, A.J.G. (Ed) (1999). Flora of Australia 17B: 189.
Herbrecs (2008). Banksia plagiocarpa, in BriMapper version 2.12. Queensland Herbarium. Accessed 23/09/2008.
Williams, P., Kemp, J., Parsons, M., Devlin, T., Collins, E. & Williams, S. (2005). Post-fire plant regeneration in montane heath of the Wet Tropics, north-eastern Queensland. Proceedings of the Royal Society of Queensland, 112: 63-70.
Profile author
Ailsa Holland (27/01/2009)

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Data source

This profile data is sourced from the QLD Wildlife Data API using the Get species by ID function used under CC-By 4.0.

This information is sourced from the WildNet database managed by the Queensland Department of Environment and Science.

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Last updated
8 March 2022