Phebalium filifolium

Phebalium filifolium, commonly known as slender phebalium,[2] is a species of upright, rounded shrub that is endemic to Western Australia. It has smooth branchlets covered with silvery scales, more or less cylindrical leaves with silvery scales on the lower side and pale to bright yellow flowers arranged in umbels of between three and eight on the ends of branchlets.

Slender phebalium
Phebalium filifolium near Kondinin
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Rutaceae
Genus: Phebalium
Species:
P. filifolium
Binomial name
Phebalium filifolium
Synonyms[1]

Description

Phebalium filifolium is an erect, spreading or rounded shrub that typically grows to a height of 0.3–1.5 m (1 ft 0 in–4 ft 11 in). Its branchlets are smooth and covered with silvery, scale-like hairs. The leaves are more or less cylindrical or bluntly triangular in cross-section, about 15 mm (0.59 in) long and 1 mm (0.039 in) wide, glabrous on the upper surface and covered with silvery or rust-coloured scales on the lower surface. The flowers are pale to bright yellow and borne in umbels of three to eight. The five sepals are 1–1.5 mm (0.039–0.059 in) long, joined for half their length and covered with rust-coloured scales on the outside. The petals are broadly elliptical, 3.5–5.5 mm (0.14–0.22 in) long and 2.5–3.5 mm (0.098–0.138 in) wide, covered with silvery scales on the outside. Flowering occurs from September to December.[2][3][4]

Taxonomy

Phebalium filifolium was first formally described in 1863 by Nikolai Turczaninow in Bulletin de la Societe Imperiale des Naturalistes de Moscou from specimens collected by James Drummond.[5][6]

Distribution and habitat

This phebalium grows on sandy and gravelly soils and is found between Dalwallinu, Menzies, Katanning and the Cape Arid National Park in Western Australia.[2][4][7]

Conservation status

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

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References
  1. "Phebalium filifolium". Australian Plant Census. Retrieved 18 June 2020.
  2. "Phebalium filifolium". FloraBase. Western Australian Government Department of Parks and Wildlife.
  3. Wilson, Paul G. (1970). "A Taxonomic Revision of the Genera Crowea, Eriostemon and Phebalium (Rutaceae). Nuytsia 1(1):". Nuytsia. 1 (1): 68. Retrieved 18 June 2020.
  4. Wilson, Paul G. "Phebalium filifolia". Australian Biological Resources Study, Department of Agriculture, Water and the Environment, Canberra. Retrieved 18 June 2020.
  5. "Phebalium filifolium". APNI. Retrieved 18 June 2020.
  6. Turczaninow, Nikolai (1852). "Decas septima generum adhuc non descriptorum adjectis descriptionibus nonnullarum specierum". Bulletin de la Societe Imperiale des Naturalistes de Moscou. 25 (3): 159. Retrieved 18 June 2020.
  7. Corrick, Margaret G.; Fuhrer, Bruce A. (2009). Wildflowers of Southern Western Australia. Dural, N.S.W.: Rosenberg Publishing. p. 196. ISBN 9781877058844.
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