Isopogon latifolius

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Isopogon latifolius
CSIRO ScienceImage 2455 Isopogon latifolius of the family Proteaceae.jpg
Status DECF P4.svg
Priority Four — Rare Taxa (DEC) [1]
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Isopogon
Species:
I. latifolius
Binomial name
Isopogon latifolius
Isopogon latifolius Distribution.png
Occurrence data from Australasian Virtual Herbarium
Synonyms

Atylus latifolius(R.Br.) Kuntze
Isopogon protea Meisn.

Contents

Isopogon latifolius is a shrub of the family Proteaceae that is endemic to the southwest botanical province of Western Australia.

Description

Isopogon latifolius grows as a woody shrub with an erect habit to 3 m (10 ft) high. The new growth is covered in fine hairs. The thick narrow leaves are 4–14 cm long and obovate to oval in shape. They are glabrous (smooth) with faint veins and end in a sharp point (apex), Flowering takes place between September and December, the showy pink flower heads, known as inflorescences, appear at the ends of branches above the foliage. They are up to 8 cm in diameter. [3]

Taxonomy

The species was first formally described by botanist Robert Brown in 1830, [2] based on material collected by William Baxter at King George's Sound. [4] The specific epithet is derived from the Latin words latus "wide" and folium "leaf". [5] In 1891, German botanist Otto Kuntze published Revisio generum plantarum , his response to what he perceived as a lack of method in existing nomenclatural practice. [6] Because Isopogon was based on Isopogon anemonifolius , [7] and that species had already been placed by Richard Salisbury in the segregate genus Atylus in 1807, [8] Kuntze revived the latter genus on the grounds of priority, and made the new combination Atylus latifolius for this species. [9] However, Kuntze's revisionary program was not accepted by the majority of botanists. [6] Ultimately, the genus Isopogon was nomenclaturally conserved over Atylus by the International Botanical Congress of 1905. [10]

Distribution and habitat

Isopogon latifolius is found from Albany and the Stirling Range eastwards to the vicinity of Cheyne Bay. [3] It grows on hilltops and stony outcrops and slopes, in association with sandstone, quartzite and schist. [1] It grows in heath, scrub, or low woodland. [3]

Ecology

This plant is extremely sensitive to dieback from Phytophthora cinnamomi and is at risk of extinction from it in the wild. [11]

I. latifolius can take over five years to flower from seed, meaning it can be locally eradicated by too-frequent fire intervals. [12]

Cultivation

The showiest of the isopogons, I. latifolius can be grown in regions with low humidity and in positions with good drainage, but will die readily if these conditions cannot be met. [5] It has been grafted successfully onto Isopogon anethifolius . [13] I. latifolius is used in the cut flower industry. [5]

Related Research Articles

<i>Banksia coccinea</i> Species of shrub or small tree

Banksia coccinea, commonly known as the scarlet banksia, waratah banksia or Albany banksia, is an erect shrub or small tree in the family Proteaceae. Its distribution in the wild is along the south west coast of Western Australia, from Denmark to the Stokes National Park, and north to the Stirling Range, growing on white or grey sand in shrubland, heath or open woodland. Reaching up to 8 m (26 ft) in height, it is a single-stemmed plant that has oblong leaves, which are 3–9 cm (1.2–3.5 in) long and 2–7 cm (0.8–2.8 in) wide. The prominent red and white flower spikes appear mainly in the spring. As they age they develop small follicles that store seeds until opened by fire. Though widely occurring, it is highly sensitive to dieback and large populations of plants have succumbed to the disease.

<span class="mw-page-title-main">Otto Kuntze</span> German botanist (1843–1907)

Carl Ernst Otto Kuntze was a German botanist.

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<i>Banksia sceptrum</i> Flowering shrub in the family Proteaceae from Western Australia

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

Banksia baueri, commonly known as the woolly banksia, is a species of shrub that is endemic to the southwest of Western Australia. It has serrated leaves and a distinctively large and hairy looking inflorescence with cream, yellow or brown flowers, and hairy fruit.

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

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<i>Banksia caleyi</i> Australian species of shrub, the red lantern banksia

Banksia caleyi, commonly known as Caley's banksia or red lantern banksia, is a species of woody shrub of the family Proteaceae native to Western Australia. It generally grows as a dense shrub up to 2 m (7 ft) tall, has serrated leaves and red, pendent (hanging) inflorescences which are generally hidden in the foliage. First described by Scottish naturalist Robert Brown in 1830, Banksia caleyi was named in honour of the English botanist George Caley. No subspecies are recognised. It is one of three or four related species with hanging inflorescences, which is an unusual feature within the genus.

<i>Banksia candolleana</i> Species of shrub in thefamily Proteaceae endemic to Western Australia

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

Banksia elegans, commonly known as the elegant banksia, is a species of woody shrub that is endemic to a relatively small area of Western Australia. Reaching 4 m (13 ft) high, it is a suckering shrub that rarely reproduces by seed. The round to oval yellow flower spikes appear in spring and summer. Swiss botanist Carl Meissner described Banksia elegans in 1856. It is most closely related to the three species in the subgenus Isostylis.

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

Banksia hookeriana, commonly known as Hooker's banksia, is a species of shrub of the genus Banksia in the family Proteaceae. It is native to the southwest of Western Australia and can reach up to 4 m (13 ft) high and 3 m (9.8 ft) wide. This species has long narrow serrated leaves and large, bright flower spikes, initially white before opening to a bright orange that appear over the cooler months. The flowers are pollinated by honeyeaters. The ageing flower spikes develop woody seed pods known as follicles. B. hookeriana is serotinous — large numbers of seeds are stored in the plant canopy for years until the plants are burnt by bushfire.

<i>Banksia lemanniana</i> Shrub of the family Proteaceae native to Western Australia

Banksia lemanniana, the yellow lantern banksia or Lemann's banksia, is a species of flowering plant in the family Proteaceae, native to Western Australia. It generally grows as an open woody shrub or small tree to 5 m (16 ft) high, with stiff serrated leaves and unusual hanging inflorescences. Flowering occurs over summer, the greenish buds developing into oval flower spikes before turning grey and developing the characteristic large woody follicles. It occurs within and just east of the Fitzgerald River National Park on the southern coast of the state. B. lemanniana is killed by bushfire and regenerates from seed.

<i>Banksia media</i> Shrub native to Western Australia

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

Banksia meisneri, commonly known as Meisner's banksia, is a shrub that is endemic to a small area in the south-west of Western Australia. It has crowded, more or less linear leaves and in winter and spring, spikes of golden brown flowers followed by furry fruit which usually only open after fire.

<i>Isopogon anemonifolius</i> A shrub of the family Proteaceae that is found only in eastern New South Wales in Australia

Isopogon anemonifolius, commonly known as broad-leaved drumsticks, is a shrub of the family Proteaceae that is native only to eastern New South Wales in Australia. It occurs naturally in woodland, open forest, and heathland on sandstone soils. I. anemonifolius usually ranges between one and two metres in height, and is generally smaller in exposed heathland. Its leaves are divided and narrow, though broader than those of the related Isopogon anethifolius, and have a purplish tinge during the cooler months. The yellow flowers appear during late spring or early summer and are displayed prominently. They are followed by round grey cones, which give the plant its common name drumsticks. The small hairy seeds are found in the old flower parts.

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<i>Revisio Generum Plantarum</i>

Revisio Generum Plantarum, also known by its standard botanical abbreviation Revis. Gen. Pl., is a botanic treatise by Otto Kuntze. It was published in three volumes; the first two of these appeared in 1891, and the third was published in two parts in 1893 and 1898.

<i>Leucophyta</i> Species of plant

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References

  1. 1 2 "Isopogon latifolius". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  2. 1 2 "Isopogon latifolius". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government. Retrieved 19 January 2013.
  3. 1 2 3 "Isopogon latifolius". Flora of Australia Online. Department of the Environment and Heritage, Australian Government.
  4. Brown, Robert (1830). Supplementum primum Prodromi florae Novae Hollandiae. London, United Kingdom: Richard Taylor. p. 8.
  5. 1 2 3 Wrigley, John; Fagg, Murray (1991). Banksias, Waratahs and Grevilleas. Sydney, New South Wales: Angus & Robertson. p. 433. ISBN   0-207-17277-3.
  6. 1 2 Erickson, Robert F. "Kuntze, Otto (1843–1907)". Botanicus.org. Retrieved 28 November 2015.
  7. Knight, Joseph (1809). On the Cultivation of the Plants Belonging to the Natural Order of Proteeae. London, United Kingdom: W. Savage. p.  94.
  8. Hooker, William (1805). The Paradisus Londinensis. Vol. 1. London, United Kingdom: D. N. Shury.
  9. Kuntze, Otto (1891). Revisio generum plantarum:vascularium omnium atque cellularium multarum secundum leges nomenclaturae internationales cum enumeratione plantarum exoticarum in itinere mundi collectarum. Leipzig, Germany: A. Felix. p. 578. Archived from the original on 2015-12-08. Retrieved 2015-12-28.
  10. "Congrès international de Botanique de Vienne". Bulletin de la Société botanique de France. 52: LIII. 1905.
  11. Barrett, Sarah; Shearer B. L.; Crane, C.E.; Cochrane, A. (2008). "An extinction-risk assessment tool for flora threatened by Phytophthora cinnamomi". Australian Journal of Botany. 56 (6): 477–86. doi:10.1071/BT07213.
  12. Barrett, Sarah (February 2000). "Montane Heath and Thicket of the South West Botanical Province, above approximately 900 m above sea level (Eastern Stirling Range Montane Heath and Thicket Community): Interim Recovery Plan 1999-2002" (PDF). Department of Conservation and Land Management Western Australian Threatened Species and Communities Unit.
  13. Cavanagh, Tony (2006). "Isopogon cuneatus vs Isopogon latifolius" (PDF). Isopogon and Petrophile Study Group (9): 8–9. ISSN   1445-9493.