Banksia gardneri

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Prostrate banksia
Banksia gardneri.jpg
Banksia gardneri 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
Section: Banksia sect. Banksia
Series: Banksia ser. Prostratae
Species:
B. gardneri
Binomial name
Banksia gardneri
Synonyms [1]

Banksia gardneri, commonly known as prostrate banksia, [2] is a species of prostrate shrub that is endemic to Western Australia. It has pinnatipartite or serrated leaves, usually rusty brown flowers, and up to twenty-five elliptical follicles in each fruiting head. It occurs along the west part of the south coast of the state.

Contents

Description

Banksia gardneri is a prostrate shrub that forms a lignotuber and has hairy stems that usually lie on the surface. Its leaves are pinnatipartite or serrated, 100–280 mm (3.9–11.0 in) long and 20–60 mm (0.79–2.36 in) wide on a petiole 40–120 mm (1.6–4.7 in) long, the lobes on the sides triangular to oblong. The flowers are borne on a head 35–100 mm (1.4–3.9 in) long and 40–60 mm (1.6–2.4 in) wide when the flowers open, with hairy involucral bracts 10–30 mm (0.39–1.18 in) long at the base of the head. The flowers are usually rusty brown with a cream-coloured style. The perianth is 17–26 mm (0.67–1.02 in) long and the pistil 18–30 mm (0.71–1.18 in) long. Flowering occurs from April to November and up to twenty-five densely hairy, elliptical follicles 23–40 mm (0.91–1.57 in) long, 5–20 mm (0.20–0.79 in) high and 8–15 mm (0.31–0.59 in) wide form in each head. [2] [3] [4] [5]

Taxonomy and naming

Prostrate banksia was first formally described in 1830 by Robert Brown who gave it the name Banksia prostrata, but the name was illegitimate because it was already in use (Banksia prostrataJ.R.Forst. & G.Forst.) for a New Zealand endemic now known as Pimelea prostrata (J.R.Forst. & G.Forst.) Lam. [6] In 1981, Alex George described the species in the journal Nuytsia , giving it the name Banksia gardneri. The specific epithet honours Charles Gardner, the Government Botanist of Western Australia from 1929 to 1960.

In the same journal, George described three varieties and the names are accepted by the Australian Plant Census:

Distribution and habitat

Banksia gardneri grows in shrubland, low woodland and kwongan, mainly between Cranbrook, Ravensthorpe, Harrismith and the south coast of Western Australia.

Conservation status

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

Related Research Articles

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

Banksia goodii, commonly known as Good's banksia, is a species of prostrate shrub that is endemic to a small area in the south-west of Western Australia. It has densely hairy stems, wavy, oblong to egg-shaped leaves with irregularly serrated margins, rusty-brown flowers and hairy fruit. It grows in low forest and woodland near Albany and is listed as "endangered".

<i>Banksia petiolaris</i> Flowering plant of the family Proteaceae native to Western Australia

Banksia petiolaris is a rare species of flowering plant in the family Proteaceae native to Western Australia, where it is found in sandy soils in the south coastal regions from Munglinup east to Israelite Bay. It was first described by Victorian state botanist Ferdinand von Mueller in 1864, and no subspecies are recognised. B. petiolaris is one of several closely related species that will all grow as prostrate shrubs, with horizontal stems and thick, leathery upright leaves. Those of this species can be viable for up to 13 years—the longest-lived of any flowering plant recorded. It bears yellow cylindrical flower spikes, known as inflorescences, up to 16 cm high in spring. As the spikes age, they turn grey and develop up to 20 woody seed pods, known as follicles, each.

Taxonomy of <i>Banksia</i> Classification of the plant genus Banksia

As with other flowering plants, the taxonomy of Banksia has traditionally been based on anatomical and morphological properties of the Banksia flower, fruiting structure and seed, along with secondary characteristics such as leaf structure and growth habit. Increasingly, molecular evidence from DNA is providing important new insights into relationships within the genus and between this and other genera in the Proteaceae.

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

Banksia chamaephyton, commonly known as the fishbone banksia, is a species of shrub that is endemic to Western Australia. It has prostrate, underground stems, pinnatipartite leaves, cream-coloured and brown flowers arranged in spikes surrounded by hairy bracts. It grows in kwongan near the lower west coast.

<i>Banksia conferta</i> Species of shrub in the family Proteaceae endemic to eastern Australia

Banksia conferta, commonly known as the glasshouse banksia, is a species of shrub that is endemic to eastern Australia. It has rough, bark on the trunk, elliptic to egg-shaped leaves arranged in whorls, crowded yellow flowers in a cylindrical spike later forming a relatively large number of follicles.

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

Banksia repens, the creeping banksia, is a species of shrub in the plant genus Banksia. It occurs on the south coast of Western Australia from D'Entrecasteaux National Park in the west to Mount Ragged in the east.

<i>Banksia blechnifolia</i> Species of shrub in the family Proteaceae from Western Australia

Banksia blechnifolia is a species of flowering plant in the genus Banksia found in Western Australia. It was first described by Victorian state botanist Ferdinand von Mueller in 1864, and no subspecies are recognised. It gained its specific name as its leaves are reminiscent of a fern (Blechnum). B. blechnifolia is one of several closely related species that grow as prostrate shrubs, with horizontal stems and leathery, upright leaves. The red-brown flower spikes, known as inflorescences, are up to 20 centimetres (8 in) high and appear from September to November in the Australian spring. As the spikes age, each turns grey and develops as many as 25 woody seed pods, known as follicles.

<i>Banksia aurantia</i> Species of shrub in the genus Banksia native to Western Australia

Banksia aurantia, commonly known as the orange dryandra, is a shrub that is endemic to Western Australia. It has underground stems, deeply divided leaves with 18 to 28 lobes on each sides, about eighty pale orange-pink flowers in each inflorescence, and egg-shaped follicles.

Banksia densa is a species of column-like shrub that is endemic to Western Australia. It has deeply serrated to pinnatifid leaves, creamy yellow flowers in heads of up to seventy-five, and hairy follicles.

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

Banksia falcata, commonly known as prickly dryandra, is a species of prickly, column-shaped shrub that is endemic to Western Australia. It has serrated or pinnatipartite leaves, heads of up to 150 yellow flowers and soft-hairy fruit.

Banksia fasciculata is a species of column-shaped shrub that is endemic to Western Australia. It has hairy stems, crowded, prickly leaves, yellow flowers and hairy 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 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 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.

<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.

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

Banksia tenuis is a species of shrub that is endemic to the southwest of Western Australia. It has pinnatifid, serrated or smooth-edges leaves, golden brown and cream-coloured flowers in heads of about fifty-five and glabrous, egg-shaped follicles.

Banksia tortifolia is a small, spreading, prostrate shrub that is endemic to the southwest of Western Australia. It has short underground stems, pinnatipartite leaves with sharply-pointed, linear lobes on each side, greenish-cream, yellow and pink flowers in heads of about eighty, and glabrous, egg-shaped follicles.

Kevin Thiele and Pauline Ladiges taxonomic arrangement of Banksia, published in 1996, was a novel taxonomic arrangement that was intended to align the taxonomy of Banksia more closely with the phylogeny that they had inferred from their cladistic analysis of the genus. It replaced Alex George's 1981 arrangement, but most aspects were not accepted by George, and it was soon replaced by a 1999 revision of George's arrangement. However some herbaria have continued to follow Thiele and Ladiges on some points.

References

  1. 1 2 "Banksia gardneri". Australian Plant Census. Retrieved 29 April 2020.
  2. 1 2 3 "Banksia gardneri". 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. pp. 207–209. Retrieved 29 April 2020.
  4. George, Alex S. (1996). The Banksia Book (3rd ed.). Kenthurst, New South Wales: Kangaroo Press. pp. 156–159. ISBN   0-86417-818-2.
  5. George, Alex S. (1981). "The Genus Banksia L.f. (Proteaceae)". Nuytsia. 3 (3): 369–373. Retrieved 29 April 2020.
  6. "Banksia prostrata J.R.Forst. & G.Forst". Kew Science/Plants of the World online. Retrieved 30 April 2020.
  7. "Banksia gardneri var. brevidentata". Australian Plant Census. Retrieved 30 April 2020.
  8. "Banksia gardneri var. gardneri". Australian Plant Census. Retrieved 30 April 2020.
  9. "Banksia gardneri var. hiemalis". Australian Plant Census. Retrieved 30 April 2020.