Dryandra wonganensis
| Banksia wonganensis | |
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| Banksia wonganensis growing near Mt. Matilda in the Wongan Hills. | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| Order: | Proteales |
| Family: | Proteaceae |
| Genus: | Banksia |
| Species: | B. wonganensis |
| Binomial name | |
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Banksia wonganensis (A.S.George) A.R.Mast & K.R.Thiele |
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| Synonyms | |
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Dryandra wonganensis A.S.George |
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Dryandra wonganensis A.S.George
Banksia wonganensis is a large shrub endemic to Western Australia that, until 2007, was previously known as Dryandra wonganensis. It occurs within a small area in the vicinity of the Wongan Hills. It grows on lateritic soils in open woodland or amongst dense shrub. It is rare, but does not appear to be endangered.
It is a sprawling or erect shrub, up to 3 metres (10 ft) high, without a lignotuber. Leaves are 4 to 16 centimetres (1.6 to 6.3 in) long, and nine to 18 millimetres wide, and pinnatifid, with four to nine triangular lobes on each side, before tapering to a fine point. They are often strongly curved. Flowers are bright yellow, and occur in heads of 45 to 50 flowers, up to 3.5 centimetres (1.4 in) across. Each flower consists of a tubular perianth made up of four fused tepals, and one long wiry style; the head of the style is initially trapped inside the upper perianth parts, but breaks free at anthesis. After flowering, follicles develop in the woody base of the flower head, each containing one or sometimes two seeds.
Early collections of B. wonganensis include specimens collected by Alexander Morrison at Wongan Hills in October 1903, by Norm Moyle in Monk Well Gully, Wongan Hills, by Fred Lullfitz northwest of Wongan Hills, and by Kenneth Newbey in the Wongan Hills. In 1985 these specimens were wrongly attributed to Dryandra hewardiana (now Banksia hewardiana) by Robert Malcolm Sainsbury in his Field Guide to Dryandras, but it was later recognised as a distinct species, and referred to in FloraBase as Dryandra sp. 25. The type specimen was collected by Alex George on 4 August 1986, from a location on Piawaning Road north-west of Wongan Hills. George published a formal description of the species in 1996 in Nuytsia 10(3). He placed it in the genus Dryandra, subgenus Dryandra, series Armatae, and gave it the specific epithet "wonganensis" from "wongan", after the Wongan Hills where it is found, and the Latin "ensis" (origin or place). Thus its full name was Dryandra wonganensis A.S.George.
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