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Dryandra obtusa
 
Ruler

Distribution Map
Family: Proteaceae
Distribution: Sandy heath in the far south of Western Australia.
Common Name: No generally accepted common name
Derivation of Name: Dryandra...after Jonas Dryander, a swedish botanist.
obtusa...from Latin obtusus, blunt, referring to the shape of the toothed leaves.
Conservation Status: Not considered to be at risk in the wild.

General Description:

Dryandra obtusa

  

Dryandra is a large genus of 135 species in the Protea family. Their nearest relative is the genus Banksia but, unlike the banksias, Dryandra occurs naturally only in Western Australia (Banksia can be found in all states and one species one even extends its range to islands to Australia's north).

Dryandra obtusa is one of the prostrate species of the genus. It has horizontal stems which spread to about 1 - 2 metres and which may be partly underground. The leaves are long and narrow, being up to 30 cm long by 2 cm wide with blunt, triangular teeth along each side. The yellow flower heads form at the ends of the branches and are 3 to 5 cm in diameter. Flowers are seen in winter and spring and are surrounded by reddish/brown bracts.

D.obtusa is not commonly seen in cultivation but is one of the hardier species. It is likely to resent summer humidity but would be worth experimenting with in a range of well-drained soils and climates. It is reported to be slow growing and prefers full sun or partial shade. It should be tolerant of at least moderate frost.

Propagation from seed is relatively easy but cuttings are slow and difficult to strike.



Transfer of Dryandra to Banksia
A paper published in February 2007 (see below) has proposed that the genus Dryandra be subsumed into Banksia. The paper publishes new names in Banksia for all currently recognised Dryandra species. At this stage ASGAP is retaining Dryandra as a separate genus until it becomes clear whether the published change will be generally accepted by Australia herbaria.
Mast A R and Thiele K; The transfer of Dryandra R.Br. to Banksia L.f. (Proteaceae); Australian Systematic Botany, 26 February 2007


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Updated: Friday 9 November 2007.