Asterolasia squamuligera

Asterolasia squamuligera, commonly known as yellow starbush,[2] is a species of erect, woody, slender perennial shrub that is endemic to the southwest of Western Australia. It has leathery, egg-shaped leaves with the narrower end towards the base and yellow flowers arranged in umbels of five to ten with a fringe of scales on the back of the petals, and about ten stamens.

Yellow starbush
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Rutaceae
Genus: Asterolasia
Species:
A. squamuligera
Binomial name
Asterolasia squamuligera
Synonyms[1]
  • Eriostemon hookeri F.Muell. nom. illeg.
  • Phebalium squamuligerum Hook.
  • Urocarpus squamuliger (Hook.) Paul G.Wilson
  • Urocarpus squamuligerus Paul G.Wilson orth. var.

Description

Asterolasia squamuligera is slender, woody, perennial shrub that typically grows to a height of about 50 cm (20 in). The leaves are leathery, egg-shaped with the narrower end towards the base, 10–20 mm (0.39–0.79 in) long and glabrous or with a few star-shaped hairs. The flowers are arranged in sessile umbels of five to ten in leaf axils and on the ends of branchlets, each flower on a thin pedicel up to 15 mm (0.59 in) long. The petals are yellow, elliptical, about 6 mm (0.24 in) long, with a fringe of scales on the back, and there are about ten stamens.[2][3]

Taxonomy

This species was first formally described in 1848 by William Jackson Hooker who gave it the name Phebalium squamuligerum and published the description in Icones Plantarum from specimens collected by James Drummond.[4][5]

In 1863, George Bentham changed the name to Asterolasia squamuligera, publishing the change in Flora Australiensis.[6][7]

Distribution and habitat

This species grows on laterite on hilltops and flats from near Augusta east to Lake Grace and from Beverley south to Mount Barker.[2][3]

Conservation status

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

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References
  1. "Asterolasia squamuligera". Australian Plant Census. Retrieved 29 June 2020.
  2. "Asterolasia squamuligera". FloraBase. Western Australian Government Department of Parks and Wildlife.
  3. Wilson, Paul G. "Asterolasia squamuligera". Australian Biological Resources Study, Department of Agriculture, Water and the Environment, Canberra. Retrieved 29 June 2020.
  4. "Phebalium squamuligera". APNI. Retrieved 29 June 2020.
  5. Hooker, William Jackson (1848). Icones Plantarum. London: Longman, Rees, Orme, Brown, Green, & Longman etc. p. 727. Retrieved 29 June 2020.
  6. "Asterolasium squamuligera". APNI. Retrieved 29 June 2020.
  7. Bentham, George; von Mueller, Ferdinand (1863). Flora Australiensis. London: Lovell Reeve & Co. p. 352. Retrieved 29 June 2020.
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