General Description:
Banksia is a large genus of about 170 species in the Protea family, having been increased in size through the transfer of species in the former genus Dryandra to Banksia (see footnote box). The genus is almost exclusively Australian, being found in all States and Territories. A single species (B.dentata) is found in islands to Australia's north as well as in tropical Australia.
Banksia lemanniana is a shrub from 1.5 to about 5 metres in height. The leaves are broadly elliptical with toothed margins to about 75-90 mm long with a truncated tip. The new growth is often an attractive rusty colour. The obovoid inflorescences are seen in spring to summer and they are unusual in that they are pendulous on short lateral branchlets, a feature shared by only a few other species (eg. B.aculeata, B.caleyi, B.nutans, B.rosserae). The inflorescences are greenish-yellow to yellow in bud and, at maturity, are up to 100 mm in diameter and lemon-yellow in colour.
This species does not develop a lignotuber and is killed by fire. It relies on seed for regeneration.
Banksia lemanniana is not often seen in cultivation. However, it is a particularly attractive species that should be tried in various areas to determine its suitability for cultivation. It is probably best suited to areas with a dry summer and may be difficult to maintain in humid areas such as the east coast of New South Wales and Queensland. However, it has been grown to flowering size by enthusiasts in those areas suggesting that it may be more resistant to root rot fungus (Phytophora) than many other species from the west. It requires sandy, well drained soils in full sun or partial shade. It will tolerate pruning but not below existing foliage.
Propagation from seed is reliable without pre-treatment and cuttings also succeed but may be slow to strike and success rate may be well below 100%.
The new classification has come in for some criticism but, as the Australian Plant Census has been adopted as the authority on plant names by ANPSA, the revised classification has been accepted on the ANPSA website. The previous Dryandra names will also be mentioned where appropriate. For further information refer to our Banksia page.
Banksia lemanniana
Photo: Gwyn Clarke
Australian Native Plants Society (Australia)