Banksia octotriginta

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Banksia octotriginta
Banksia octotriginta.jpg
In the ANBG
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Banksia
Subgenus: Banksia subg. Banksia
Series: Banksia ser. Dryandra
Species:
B. octotriginta
Binomial name
Banksia octotriginta
Synonyms [1]

Dryandra octotrigintaA.S.George

Banksia octotriginta is a species of shrub that is endemic to the south-west of Western Australia. It has erect stems with bluish-green, deeply pinnatipartite leaves, heads of up to eighty or more golden-yellow flowers and egg-shaped follicles.

Contents

Description

Banksia octotriginta is a shrub with erect stems that typically grows to a height of 0.25–1 m (9.8 in – 3 ft 3.4 in) but does not form a lignotuber. It has bluish-green, deeply pinnatipartite leaves divided almost to the midrib, 100–250 mm (3.9–9.8 in) long and 30–60 mm (1.2–2.4 in) wide on a petiole 30–60 mm (1.2–2.4 in) long, with between ten and eighteen triangular lobes on each side. The flowers are pale golden-yellow and arranged in a head on the ends of branches in groups of between fifty and eighty-five, with linear, leaf-like involucral bracts 10–20 mm (0.39–0.79 in) long covered with rust-coloured, at the base of the head. The perianth is 35–43 mm (1.4–1.7 in) long and the pistil 40–48 mm (1.6–1.9 in) long and glabrous. Flowering occurs from July to August and the follicles are egg-shaped, about 13 mm (0.51 in) long, 12 mm (0.47 in) wide and sparsely hairy. [2] [3] [4]

Taxonomy and naming

This species was first formally described in 1996 by Alex George in the journal Nuytsia and given the name Dryandra octotriginta from specimens he collected near Nyabing in 1986. [4] [5] The specific epithet (octotriginta) is a Latin word meaning "thirty-eight", referring to number given to the species in a list of new species prepared by a Dryandra Study Group. [4]

In 2007, Austin Mast and Kevin Thiele transferred all the dryandras to the genus Banksia and this species became Banksia octotriginta. [6] [7]

Distribution and habitat

Banksia octotriginta grows in kwongan, often with mallee eucalypts and occurs between Woodanilling, Nyabing, Newdegate and Dragon Rocks. [3]

Ecology

An assessment of the potential impact of climate change on this species found that it was likely to be driven to extinction by loss of habitat by 2080, even under mild climate change scenarios. [8]

Conservation status

Banksia octotriginta is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife. [2]

Related Research Articles

Banksia cypholoba is a species of dwarf, prostrate shrub that is endemic to Western Australia. It has pinnatipartite leaves with twenty-five to forty triangular lobes on each side, heads of about sixty brownish and yellow flowers and mostly glabrous follicles.

<i>Banksia drummondii</i> Species of shrub in the family Proteaceae native to Western Australia

Banksia drummondii, commonly known as Drummond's dryandra, is a species of shrub that is endemic to Western Australia. It has pinnatifid to pinnatisect leaves, heads of up to one hundred cream-coloured, red and yellow flowers and glabrous fruit.

<i>Banksia erythrocephala</i> Species of shrub in the family Proteaceae endemic to Western Australia

Banksia erythrocephala is a species of prickly shrub that is endemic to Western Australia. It has erect stems, sharply pointed pinnatifid leaves, cream-coloured and reddish black or all cream-coloured and yellow flowers, and egg-shaped fruit.

<i>Banksia rufa</i> Species of prostrate shrub

Banksia rufa is a species of prostrate shrub that is endemic to the south-west of Western Australia. It has broadly linear, pinnatifid or pinnatipartite leaves with between five and twenty lobes on each side, yellow, orange or brownish flowers in heads of forty or more, and glabrous, egg-shaped follicles.

Banksia fililoba is a species of shrub that is endemic to Western Australia. It has pinnatipartite leaves with sharply pointed lobes, heads of up to eighty yellowish flowers and egg-shaped fruit. It mainly grows in kwongan in the south-west of the state.

<i>Banksia formosa</i> Species of shrub in the family Proteaceae endemic to the south-west of Western Australia

Banksia formosa, commonly known as showy dryandra, is a species of shrub that is endemic to the south-west of Western Australia. It has pinnatipartite leaves with up to forty triangular lobes on each side, up to more than two hundred, conspicuous golden orange flowers and up to sixteen egg-shaped follicles in each head.

Banksia idiogenes is a species of tufted shrub that is endemic to Western Australia. It has hairy stems, deeply pinnatifid leaves, distinctive, scented, red and white flowers in heads of about eighty, later several glabrous, egg-shaped follicles in each head.

Banksia lepidorhiza is a species of prostrate shrub that is endemic to Western Australia. It has underground stems, linear pinnatipartite leaves with sharply pointed lobes, pink, cream-coloured and yellow flowers in head of about thirty and egg-shaped follicles. It is only known from near Woodanilling.

<i>Banksia dallanneyi</i> Species of shrub in the family Proteaceae endemic to Western Australia

Banksia dallanneyi, commonly known as couch honeypot, is a species of prostrate shrub that is endemic to Western Australia. It only has a short above-ground stem, pinnatipartite or pinnatisect leaves, between thirty and seventy variously coloured flowers and glabrous, egg-shaped fruit.

Banksia meganotia is a species of prickly shrub that is endemic to Western Australia. It has linear, pinnatiparite leaves with sharply-pointed lobes, yellow flowers in heads of about forty and relatively small follicles.

Banksia pallida is a species of column-shaped shrub that is endemic to the south-west of Western Australia. It has densely hairy stems, linear leaves with three to five serrations on each side, pale yellow flowers in heads of up to eighty and egg-shaped to elliptical follicles.

Banksia platycarpa is a species of small shrub that is endemic to the south-west of Western Australia. It has broadly linear pinnatipartite leaves, with up to twenty-five sharply pointed lobes on each side, creamy-yellow to orange flowers in heads of up to seventy-five, and egg-shaped follicles.

Banksia plumosa is a species of shrub that is endemic to Western Australia. It has hairy stems, broadly linear pinnatifid to pinnatipartite leaves with triangular lobes, creamy-yellow flowers in heads of up to eighty, and egg-shaped follicles.

Banksia porrecta is a species of prostrate shrub that is endemic to the south-west of Western Australia. It has hairy, underground stems, pinnatipartite leaves with up to forty narrow triangular lobes on each side, yellow flowers in heads of between twenty and thirty, and one or two egg-shaped follicles in each head.

Banksia pseudoplumosa, commonly known as false plumed-banksia, is a species of shrub that is endemic to Western Australia. It has hairy stems, broadly linear, pinnatipartite leaves with sharply-pointed triangular lobes on the sides, yellow flowers in heads of about one hundred, and densely woolly-hairy follicles.

<i>Banksia pteridifolia</i> Species of shrub in the family Proteaceae native to Western Australia

Banksia pteridifolia, commonly known as tangled honeypot, is a species of shrub that is endemic to the southwest of Western Australia. It has short, underground stems, deeply pinnatipartite leaves with sharply-pointed, linear lobes on the sides, creamy white or yellow flowers in heads of about one hundred and later up to five follicles in each head.

<i>Banksia purdieana</i> Species of shrub in the family Proteaceae endemic to Western Australia

Banksia purdieana is a species of bushy shrub that is endemic to Western Australia. It has broadly linear, pinnatipartite leaves with sharply-pointed lobes on the sides, yellow flowers in heads of about eighty and egg-shaped follicles.

Banksia rufistylis is a species of column-shaped shrub that is endemic to Western Australia. It has linear leaves with sharply-pointed serrations, cream-coloured flowers with a red style arranged in heads of about forty, and egg-shaped follicles with a flattened tip.

<i>Banksia serratuloides</i> Species of shrub in the family Proteaceae endemic to Western Australia

Banksia serratuloides is a species of small shrub that is endemic to Western Australia. It has linear, pinnatipartite leaves, yellow and pink flowers in heads of about forty and hairy, wrinkled follicles.

<i>Banksia subpinnatifida</i> Species of shrub in the family Proteaceae endemic to Western Australia

Banksia subpinnatifida is a species of bushy shrub that is endemic to the southwest of Western Australia. It has more or less linear, pinnatipartite leaves with sharply-pointed teeth on the sides, golden yellow flowers in heads of about sixty, and glabrous, elliptical follicles.

References

  1. 1 2 "Banksia octotriginta". Australian Plant Census. Retrieved 20 May 2020.
  2. 1 2 "Banksia octotriginta". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. 1 2 George, Alex S. (1999). Flora of Australia (PDF). Vol. 17B. Canberra: Australian Biological Resources Study, Canberra. p. 310. Retrieved 20 May 2020.
  4. 1 2 3 George, Alex (1996). "New taxa and a new infrageneric classification in Dryandra R.Br. (Proteaceae : Grevilleoideae)". Nuytsia. 10 (3): 369. Retrieved 20 May 2020.
  5. "Dryandra octotriginta". APNI. Retrieved 20 May 2020.
  6. "Banksia mimica". APNI. Retrieved 20 May 2020.
  7. 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.
  8. Fitzpatrick, Matthew C.; Gove, Aaron D.; Sanders, Nathan J.; Dunn, Robert R. (2008). "Climate change, plant migration, and range collapse in a global biodiversity hotspot: the Banksia (Proteaceae) of Western Australia". Global Change Biology. 14 (6): 1–16. doi:10.1111/j.1365-2486.2008.01559.x.