Isopogon polycephalus

Isopogon polycephalus, commonly known as clustered coneflower,[2] is a species of plant in the family Proteaceae and is endemic to the South coast of Western Australia. It is a spreading shrub with linear to lance-shaped leaves with the narrower end towards the base, and clusters of more or less spherical heads of white, cream-coloured or yellow flowers.

Clustered coneflower
Isopogon polycephalus in the ANBG
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Isopogon
Species:
I. polycephalus
Binomial name
Isopogon polycephalus
Occurrence data from Australasian Virtual Herbarium

Description

Isopogon polycephalus is a spreading shrub that typically grows to a height of about 1 m (3 ft 3 in) and has densely hairy, reddish brown branchlets. The leaves are mostly linear to lance-shaped with the narrower end towards the base, 60–120 mm (2.4–4.7 in) long, and 6–10 mm (0.24–0.39 in) wide, ending in hard, sharp point. The flowers are arranged in sessile, more or less spherical, often clustered heads 25–30 mm (0.98–1.18 in) in diameter, with linear to narrow egg-shaped involucral bracts at the base. The flowers are 10–15 mm (0.39–0.59 in) long, white, cream-coloured or yellow and glabrous. Flowering occurs from August to January and the fruit is a hairy nut, fused with others in a more or less spherical head about 20 mm (0.79 in) in diameter.[2][3]

Taxonomy

Isopogon polycephalus was first formally described in 1810 by Robert Brown in Transactions of the Linnean Society.[4][5] The specific epithet (polycephalus) means "many-headed".[6]

Distribution and habitat

Clustered coneflower grows in sandy soil in heath or sandplain between East Mount Barren and Condingup, near the south coast of Western Australia.[2][3]

Conservation status

Isopogon polycephalus is classified as "not threatened" by the Government of Western Australia Department of Parks and Wildlife.[2]

References
  1. "Isopogon polycephalus". Australian Plant Census. Retrieved 25 November 2020.
  2. "Isopogon polycephalus". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. Foreman, David B. "Isopogon polycephalus". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 25 November 2020.
  4. "Isopogon polycephalus". APNI. Retrieved 25 November 2020.
  5. Brown, Robert (1810). "On the Proteaceae of Jussieu". Transactions of the Linnean Society. 10: 73.
  6. Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 281. ISBN 9780958034180.
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