Banksia hirta

Banksia hirta is a species of shrub that is endemic to Western Australia. It has hairy stems, deeply serrated leaves, pale yellow flowers in heads of about one hundred and shining follicles. It is restricted to the Stirling Range National Park.

Banksia hirta
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Banksia
Subgenus: Banksia subg. Banksia
Series: Banksia ser. Dryandra
Species:
B. hirta
Binomial name
Banksia hirta
Synonyms[1]

Dryandra hirsuta A.S.George

Habit in the Stirling Range National Park

Description

Banksia hirta is a shrub that typically grows to a height of 2 m (6 ft 7 in) and has hairy stems but does not form a lignotuber. The leaves are lance-shaped to narrow egg-shaped with the narrower end towards the base, and deeply serrated, 50–130 mm (2.0–5.1 in) long and 15–35 mm (0.59–1.38 in) wide on a petiole 5–12 mm (0.20–0.47 in) long. There are between five and ten sharply-pointed, triangular lobes on each side of the leaves. The flowers are arranged in heads of between 90 and 110 with woolly-hairy, linear to lance-shaped involucral bracts 22–32 mm (0.87–1.26 in) long at the base of the head. The flowers have a pale yellow perianth 40–41 mm (1.6–1.6 in) long and a cream-coloured pistil 45–48 mm (1.8–1.9 in) long. Flowering occurs from May to October and the follicles are egg-shaped, 9–11 mm (0.35–0.43 in) long and shiny with only a few hairs.[2][3][4]

Taxonomy and naming

This banksia was first formally described in 1996 by Alex George who gave it the name Dryandra hirsuta and published the description in the journal Nuytsia from specimens collected in the Stirling Range National Park in 1986.[4][5] The specific epithet (hirsuta) is a Latin word meaning "having long, rather coarse hairs" referring to the stems, young leaves and involucral bracts.[4]

In 2007, Austin Mast and Kevin Thiele transferred all the Dryandra species to Banksia but as the name Banksia hirsuta had already been used by Otto Kuntze for a species now accepted as Pimelea latifolia subsp. hirsuta[6] Mast and Thiele changed the epithet to hirta, a Latin word with a similar meaning to "hirsutus".[7][8][9]

Distribution and habitat

Banksia hirta grows in rocky shrubland and woodland in the central and western parts of the Stirling Range.[2][3][4]

Conservation status

This banksia is classified as "Priority Three" by the Government of Western Australia Department of Parks and Wildlife[2] meaning that it is poorly known and known from only a few locations but is not under imminent threat.[10]

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References
  1. "Banksia hirta". Australian Plant Census. Retrieved 4 May 2020.
  2. "Banksia hirta". FloraBase. Western Australian Government Department of Parks and Wildlife.
  3. George, Alex S. (1999). Flora of Australia (PDF). 17B. Canberra: Australian Biological Resources Study, Canberra. p. 270. Retrieved 2 May 2020.
  4. George, Alex (1996). "New taxa and a new infrageneric classification in Dryandra R.Br. (Proteaceae : Grevilleoideae)". Nuytsia. 10 (3): 332–333. Retrieved 5 May 2020.
  5. "Dryandra hirsuta". APNI. Retrieved 3 May 2020.
  6. "Pimelea latifolia subsp. hirsuta". Australian Plant Census. Retrieved 4 May 2020.
  7. "Banksia hirta". APNI. Retrieved 4 May 2020.
  8. Francis Aubie Sharr (2019). Western Australian Plant Names and their Meanings. Kardinya, Western Australia: Four Gables Press. p. 218. ISBN 9780958034180.
  9. Mast, Austin R.; Thiele, Kevin (2013). "The transfer of Dryandra R.Br. to Banksia L.f. (Proteaceae)". Australian Systematic Botany. 20 (1): 63–71. doi:10.1071/SB06016.
  10. "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 5 May 2020.
  • Cavanagh, Tony; Pieroni, Margaret (2006). The Dryandras. Melbourne: Australian Plants Society (SGAP Victoria); Perth: Wildflower Society of Western Australia. ISBN 1-876473-54-1.
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