Banksia armata

Banksia armata, commonly known as prickly dryandra,[2] is a species of often sprawling shrub that is endemic to Western Australia. It has deeply serrated leaves with sharply pointed lobes and spikes of about 45 to 70 yellow flowers.

Prickly dryandra
B. armata var. armata in Beelu National Park
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. armata
Binomial name
Banksia armata
Varieties
Synonyms[1]
  • Dryandra armata R.Br.
  • Josephia armata (R.Br.) Poir.

Description

Banksia armata grows as a sprawling, spreading or upright shrub that typically grows to a height of 1.5–3 m (4 ft 11 in–9 ft 10 in) and sometimes forms a lignotuber. It has deeply serrated leaves that are 20–80 mm (0.79–3.15 in) long and 8–25 mm (0.31–0.98 in) wide with five to thirteen sharply pointed, wedge-shaped to narrow egg-shaped lobes on each side. The flowers are arranged in spikes of between 45 and 70, each flower with a yellow, sometimes pink perianth 25–39 mm (0.98–1.54 in) long. Flowering occurs from June to November and the fruit is an egg-shaped follicle 9–10 mm (0.35–0.39 in) long.[2][3][4]

Taxonomy

Specimens of B. armata were first collected at King George Sound in December 1801 by Robert Brown. Brown published a description of the species in 1810 in Transactions of the Linnean Society of London naming it Dryandra armata.[5][6] The specific epithet is from the Latin armatus meaning "armed",[7] in reference to the sharply serrated leaves. Thirty years later, John Lindley published a purported new species, which he named Dryandra favosa.[8] This was accepted as a species by Carl Meissner in 1845,[9] but declared a taxonomic synonym of D. armata by him in 1856,[10] and the latter view was taken by George Bentham his 1870 Flora Australiensis.[11] In 1996, Alex George published D. a. var. ignicida, resulting in the automatic creation of the autonym D. a. var.armata. George also refined the synonymy of D. favosa to D. armata var. armata.[12] In 2007, all Dryandra species were transferred to Banksia by Austin Mast and Kevin Thiele so that the name D. armata changed to Banksia armata.[13][14]

The names of the two varieties of this species are accepted by the Australian Plant Census:

Distribution and habitat

The species is widespread throughout most of the south-west. The main distribution is between Perth and Albany, but it also occurs near Mount Lesueur in the north, and between Esperance and Israelite Bay on the south coast. It grows on sandy loam or in rocky soils in tall shrubland or low woodland.[2][3]

Conservation status

Banksia armata and both varieties are classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.[2][17][18]

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References
  1. "Banksia armata". Australian Plant Census. Retrieved 26 March 2020.
  2. "Banksia armata". FloraBase. Western Australian Government Department of Parks and Wildlife.
  3. Cavanagh, Tony; Pieroni, Margaret (2006). The Dryandras. Melbourne: Australian Plants Society (SGAP Victoria); Perth: Wildflower Society of Western Australia. ISBN 1-876473-54-1.
  4. George, Alex S. (1999). Flora of Australia (PDF). 17B. Canberra: Australian Biological Resources Study, Canberra. pp. 268–269. Retrieved 26 March 2020.
  5. "Dryandra armata". APNI. Retrieved 26 March 2020.
  6. Brown, Robert (1810). "On the Proteaceae of Jussieu". Transactions of the Linnean Society of London. 10 (1): 213. Retrieved 26 March 2020.
  7. Francis Aubie Sharr (2019). Western Australian Plant Names and their Meanings. Kardinya, Western Australia: Four Gables Press. p. 137. ISBN 9780958034180.
  8. Lindley, John (1839). "A Sketch of the Vegetation of the Swan River Colony". Appendix to the first twenty-three volumes of Edwards's Botanical Register. London: James Ridgeway.
  9. Meissner, Carl (1845). "Dryandra". In Lehmann, Johann (ed.). Plantae Preissianae. Hamburg: Meissner. Retrieved 27 September 2007.
  10. Meissner, Carl (1856). "Dryandra". In de Candolle, A. P. (ed.). Prodromus systematis naturalis regni vegetabilis. Retrieved 14 September 2007.
  11. Bentham, George (1870). "Banksia". Flora Australiensis. Volume 5: Myoporineae to Proteaceae. London: L. Reeve & Co. pp. 541–562.
  12. George, Alex S. (1996). "New taxa and a new infrageneric classification in Dryandra R.Br. (Proteaceae: Grevilleoideae)". Nuytsia. 10 (3): 313–408.
  13. Mast, Austin R.; Thiele, Kevin (2007). "The transfer of Dryandra R.Br. to Banksia L.f. (Proteaceae)". Australian Systematic Botany. 20: 63–71. doi:10.1071/SB06016.
  14. "Banksia armata". APNI. Retrieved 26 March 2020.
  15. "Banksia armata var. armata". Australian Plant Census. Retrieved 26 March 2020.
  16. "Banksia armata var. ignicida". Australian Plant Census. Retrieved 26 March 2020.
  17. "Banksia armata var. armata". FloraBase. Western Australian Government Department of Parks and Wildlife.
  18. "Banksia armata var. ignicida". FloraBase. Western Australian Government Department of Parks and Wildlife.
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