Banksia nobilis

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Golden dryandra
Curtis's Botanical Magazine - Plate 4633 - Dryandra nobilis (rotated).jpg
Plate 4633 of Curtis's Botanical Magazine by Walter Hood Fitch
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. nobilis
Binomial name
Banksia nobilis
Synonyms

Dryandra nobilis Lindl.

B nobilis gnangarra 07.JPG

Banksia nobilis, commonly known as the golden dryandra, great dryandra or kerosene bush, is a shrub of the family Proteaceae which is endemic to Western Australia. It occurs on lateritic rises from Eneabba to Katanning in the state's Southwest Botanic Province. With large pinnatifid leaves with triangular lobes, and a golden or reddish pink inflorescence, it is a popular garden plant. It was known as Dryandra nobilis until 2007, when all Dryandra species were transferred to Banksia by Austin Mast and Kevin Thiele. There are two subspecies, B. nobilis subsp. nobilis and B. nobilis subsp. fragrans.

Contents

Description

Banksia nobilis grows as a shrub up to four metres high. Its leaves are pinnatifid, with 14 to 32 triangular lobes on each side from eight to 22 centimetres long, five to 25 millimetres wide, on a petiole five to 15 millimetres long. Inflorescences occur on short lateral branchlets; this species bears a great many inflorescences, often carrying an inflorescence in almost every axil. Flowers are golden or reddish pink, with a greenish cream limb. After flowering, heads can bear up to 5 follicles each. [1] [2]

Taxonomy

Specimens of B. nobilis were first collected in the 1830s by James Drummond from the vicinity of the Swan River Colony. The species was published under the name Dryandra nobilis by John Lindley in his 1840 A Sketch of the Vegetation of the Swan River Colony , [3] where he referred to it as "a most splendid plant in the way of D. longifolia and tenuifolia, with leaves from a foot to a foot and half long". [4] Lindley did not specify his type material, and there is no type at the University of Cambridge Herbarium, where most of Lindley's type specimens are lodged. However most of A Sketch of the Vegetation of the Swan River Colony is based upon the collections of Drummond, [4] and one of Drummond's specimens has since been selected as lectotype for the species. [5] Lindley also proffered no etymology for the specific epithet, but it is accepted that it comes from the Latin nobilis ("noble, imposing") in reference to the purportedly noble appearance of the plant. [2]

In addition to plant specimens, Drummond also sent seeds of D. nobilis to England. Plants were raised from Drummond's seeds, and in 1852 one of them flowered, making D. nobilis one of only two dryandras known to have flowered in Europe from Drummond's seed. The flowering specimen was about seven years old at the time, and about four feet high. It became the basis for a lithographed plate by Walter Hood Fitch, which was featured in Volume 78 of Curtis's Botanical Magazine . [6] By this time, however, the enthusiasm for Proteaceae that prevailed among horticulturalists in the 1840s had waned, and D. nobilis would be the last dryandra to feature in Curtis's Botanical Magazine. [2]

Text accompanying Fitch's plate by William Jackson Hooker suggested that Carl Meissner considered their specimen to be the then unpublished species Dryandra runcinata, but this was a mis-identification: D. runcinata is now considered a synonym of Banksia squarrosa rather than this species. [7]

The species has had a fairly uneventful taxonomic history since publication, with only three events of taxonomic interest since publication. In 1891, Otto Kuntze made an unsuccessful attempt to transfer the genus Dryandra into the name Josephia, in the process publishing the name Josephia nobilis for this species. That name is now considered a nomenclatural synonym of B. nobilis. [8] In 1996 Alex George published a subspecies, D. nobilis subsp. fragrans (now B. nobilis subsp. fragrans), therefore also invoking the autonym D. nobilis subsp. nobilis (now B. nobilis subsp. nobilis) to encompass the type material. Finally, in 2007 the genus Dryandra was transferred into Banksia by Austin Mast and Kevin Thiele, [9] resulting in the publication of the current name for this species, Banksia nobilis (Lindl.) A.R.Mast & K.R.Thiele. [10]

Distribution and habitat

Distribution of B. nobilis Banksia nobilis map.png
Distribution of B. nobilis

Banksia nobilis occurs on lateritic rises from Eneabba in the north to Katanning in the south. Much of its distribution roughly follows the boundary between the Jarrah Forest and Avon Wheatbelt biogeographic regions, but at its northern limits it extends into the Swan Coastal Plain and Geraldton Sandplains. [11] For most of its range it grows in eucalypt woodland and tall shrubland, but at its northern extents it grows among thick kwongan. [2]

Conservation

Banksia nobilis subsp. nobilis is not currently endangered, and is currently exploited in the wild by the cut flower industry. [2] [12] Banksia nobilis subsp. fragrans has been listed as Priority Three - Poorly Known Taxa on the Western Australian Department of Environment and Conservation's Declared Rare and Priority Flora List. [2] [13]

An assessment of the potential impact of climate change on this species found that severe change is likely to lead to a contraction of its range by up to 80% by 2080; but under less severe change scenarios the distribution may contract slightly or even grow, depending on how effectively it can migrate into newly habitable areas. [14]

Cultivation

Banksia nobilis subsp. nobilis has long been a popular garden plant because of its prolific flowering. It prefers heavy, gravelly soil with excellent drainage, in a sunny position. It is drought tolerant, and frost tolerant down to -7 °C. Plants become straggly and untidy with age, so should be pruned when young. Propagation is by seed, as the hairy stems of this plant make it virtually impossible to strike stem cuttings, and heel cuttings have been met with limited success. Germination takes three to four weeks, and has an excellent success rate. Flowering usually begins at three to four years from seed. [2]

Banksia nobilis subsp. fragrans is new to cultivation and there is little information available for it. It probably requires a similar aspect to subspecies nobilis, but would be better suited to warmer areas. [2]

Related Research Articles

Taxonomy of <i>Banksia integrifolia</i> Classification of a tree species

The taxonomy of Banksia integrifolia has a long and complex history, the result of confusion caused by the species' great variability, and similarities with some closely related species. The existence of hybrids between B. integrifolia and related species as well as early attempts to classify the species based on dried specimen material have also contributed to the confusion.

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

Banksia proteoides, commonly known as king dryandra, is a shrub endemic to Western Australia. It was known as Dryandra proteoides until 2007, when all Dryandra species were transferred to Banksia by Austin Mast and Kevin Thiele.

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

Banksia stuposa is a species of shrub that is endemic to the southwest of Western Australia. It has hairy stems, broadly linear pinnatifid leaves, golden yellow and white flowers in heads of one hundred or more, and hairy, egg-shaped follicles.

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

Banksia vestita, commonly known as summer dryandra, is a species of shrub that is endemic to the southwest of Western Australia. It has broadly linear, pinnatifid leaves with sharply pointed teeth on both sides, yellow flowers in heads of between thirty and forty, and broadly egg-shaped follicles.

<i>Banksia sessilis <span style="font-style:normal;">var.</span> cordata</i> Variety of plant in the family Proteaceae from the extreme south-west corner of Western Australia

Banksia sessilis var. cordata is a variety of Banksia sessilis, with unusually large leaves and flower heads. It is a rare variety that is restricted to the extreme south-west corner of Western Australia.

Banksia bipinnatifida subsp. bipinnatifida is a subspecies of Banksia bipinnatifida. As an autonym, it is defined as encompassing the type material of the species. It was known as Dryandra bipinnatifida subsp. bipinnatifida until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.

Banksia borealis subsp. borealis is a subspecies of Banksia borealis. As an autonym, it is defined as encompassing the type material of the species. It was known as Dryandra borealis subsp. borealis until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.

Banksia mucronulata subsp. mucronulata is a subspecies of Banksia mucronulata (swordfish dryandra). As an autonym, it is defined as encompassing the type material of the species. It was known as Dryandra mucronulata subsp. mucronulata until 2007, when Austin Mast and Kevin Thiele transferred all Dryandra into Banksia. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.

Banksia nobilis subsp. nobilis is a subspecies of Banksia nobilis. As an autonym, it is defined as encompassing the type material of the species. It was known as Dryandra nobilis subsp. nobilis until 2007, when Austin Mast and Kevin Thiele transferred Dryandra into Banksia. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.

Banksia pteridifolia subsp. pteridifolia is a subspecies of Banksia pteridifolia. As an autonym, it is defined as encompassing the type material of the species. It was known as Dryandra pteridifolia subsp. pteridifolia until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.

<i>Banksia serratuloides <span style="font-style:normal;">subsp.</span> serratuloides</i> Subspecies of shrub

Banksia serratuloides subsp. serratuloides is a subspecies of Banksia serratuloides. As an autonym, it is defined as encompassing the type material of the species. It was known as Dryandra serratuloides subsp. serratuloides until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.

Banksia squarrosa subsp. squarrosa is a subspecies of Banksia squarrosa, commonly called "pingle". As an autonym, it is defined as encompassing the type material of the species. It was known as Dryandra squarrosa subsp. squarrosa until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.

Banksia dallanneyi subsp. agricola is a subspecies of Banksia dallanneyi. It was known as Dryandra lindleyana subsp. agricola until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. Since there was already a Banksia named Banksia lindleyana, Mast and Thiele had to choose a new specific epithet for D. lindleyana and hence for this subspecies of it. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.

Banksia dallanneyi subsp. sylvestris is a subspecies of Banksia dallanneyi. It was known as Dryandra lindleyana subsp. sylvestris until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. Since there was already a Banksia named Banksia lindleyana, Mast and Thiele had to choose a new specific epithet for D. lindleyana and hence for this subspecies of it. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.

Banksia splendida subsp. macrocarpa is a subspecies of Banksia splendida. It was known as Dryandra speciosa subsp. macrocarpa until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. Since there was already a species named Banksia speciosa, Mast and Thiele had to choose a new specific epithet for D. speciosa and hence for this subspecies of it. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.

Banksia splendida subsp. splendida is a subspecies of Banksia splendida. It was known as Dryandra speciosa subsp. speciosa until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. Since the name Banksia speciosa had already been used, Mast and Thiele had to choose a new specific epithet for D. speciosa and hence for this subspecies of it. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia. As an autonym, it is defined as encompassing the type material of the species.

Banksia rufa subsp. rufa is a subspecies of Banksia rufa. It was known as Dryandra ferruginea subsp. ferruginea until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. Since the name Banksia ferruginea had already been used, Mast and Thiele had to choose a new specific epithet for D. ferruginea and hence for this subspecies of it. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia. As an autonym, it is defined as encompassing the type material of the species.

Banksia prolata subsp. prolata is a subspecies of Banksia prolata. It was known as Dryandra longifolia subsp. longifolia until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. Since the name Banksia longifolia had already been used, Mast and Thiele had to choose a new specific epithet for D. longifolia and hence for this subspecies of it. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia. As an autonym, it is defined as encompassing the type material of the species.

Banksia dallanneyi subsp. dallanneyi is a subspecies of Banksia dallanneyi. It was known as Dryandra lindleyana subsp. lindleyana until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. Since the name Banksia lindleyana had already been used, Mast and Thiele had to choose a new specific epithet for D. lindleyana and hence for this subspecies of it. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia. As an autonym, it is defined as encompassing the type material of the species.

Dryandra ser. Aphragma Obsolete series within the former genus Dryandra

Dryandra ser. Aphragma is an obsolete series within the former genus Dryandra. It was first published at sectional rank by Robert Brown in 1830, and was retained at that rank until 1999, when Alex George demoted it to a series. It was discarded in 2007 when Austin Mast and Kevin Thiele sank Dryandra into Banksia.

References

  1. ↑ "Dryandra nobilis Lindl". Flora of Australia Online. Department of the Environment and Heritage, Australian Government.
  2. 1 2 3 4 5 6 7 8 Cavanagh, Tony; Pieroni, Margaret (2006). The Dryandras. Melbourne: Australian Plants Society (SGAP Victoria); Perth: Wildflower Society of Western Australia. ISBN   1-876473-54-1.
  3. ↑ "Dryandra nobilis Lindl". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  4. 1 2 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.
  5. ↑ George, Alex S. (1996). "New taxa and a new infragenetic classification in Dryandra R.Br. (Proteaceae: Grevilleoideae)". Nuytsia . 10 (3): 313–408.
  6. ↑ Hooker, William Jackson; Smith, John (1852). "Tab. 4633. Banksia nobilis. Handsome Dryandra". Curtis's Botanical Magazine . London: Reeve and Co.
  7. ↑ "Dryandra runcinata Meisn". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  8. ↑ "Josephia nobilis (Lindl.) Kuntze". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  9. ↑ 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.
  10. ↑ "Banksia nobilis (Lindl.) A.R.Mast & K.R.Thiele". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  11. ↑ "Dryandra nobilis Lindl". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  12. ↑ "Dryandra nobilis Lindl. subsp. nobilis A.S.George". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  13. ↑ "Dryandra nobilis subsp. fragrans A.S.George". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  14. ↑ 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. Bibcode:2008GCBio..14.1337F. doi:10.1111/j.1365-2486.2008.01559.x.
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