Isopogon attenuatus
In the Australian National Botanic Gardens
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Isopogon
Species:
I. attenuatus
Binomial name
Isopogon attenuatus
Occurrence data from Australasian Virtual Herbarium
Synonyms[1]
  • Atylus attenuatus (R.Br.) Kuntze
  • Isopogon attenuatus var. angustatus Meisn.
  • Isopogon attenuatus R.Br. var. attenuatus
  • Isopogon attenuatus var. dilatatus Meisn.
  • Isopogon attenuatus var. latebracteata Benth.

Isopogon attenuatus is a species of plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a shrub with oblong to spatula-shaped or linear leaves and spherical heads of yellow flowers.

Description

Isopogon attenuatus is a shrub that typically grows to a height of 0.2–2 m (7.9 in – 6 ft 6.7 in) and has mostly glabrous, brownish branchlets. The leaves are oblong to spatula-shaped or linear, 80–240 mm (3.1–9.4 in) long and 10–20 mm (0.39–0.79 in) wide on a petiole about 50 mm (2.0 in) long, with a sharp point on the tip. The flowers are arranged in sessile, more or less spherical heads 40–50 mm (1.6–2.0 in) in diameter. The involucral bracts are egg-shaped, the flowers 10–15 mm (0.39–0.59 in) long and creamy yellow to pale yellow. Flowering occurs from September to February and the fruit is a hairy nut, fused in a more or less spherical head about 25 mm (0.98 in) in diameter.[2][3]

Taxonomy

Isopogon attenuatus was first formally described in 1810 by Robert Brown in the Transactions of the Linnean Society of London.[4][5]

Distribution and habitat

This isopogon grows in woodland with a heathy understorey, in scattered population from near Perth to Albany and Mount Manypeaks, in the south-west of Western Australia.[2][3]

Conservation status

Isopogon attenuatus is classified as "not threatened" by the Government of Western Australia Department of Parks and Wildlife.[3]

References

  1. 1 2 "Isopogon attenuatus". Australian Plant Census. Retrieved 20 November 2020.
  2. 1 2 Foreman, David B. "Isopogon attenuatus". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 20 November 2020.
  3. 1 2 3 "Isopogon attenuatus". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. ↑ "Isopogon attenuatus". APNI. Retrieved 20 November 2020.
  5. ↑ Brown, Robert (1810). "On the Proteaceae of Jussieu". Transactions of the Linnean Society of London. 10 (1): 73. Retrieved 20 November 2020.
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