Phebalium brachycalyx

Phebalium brachycalyx is a species of shrub that is endemic to the southwest of Western Australia. It is more or less covered with silvery and rust-coloured scales, and has narrow oblong leaves with wavy-glandular edges, and white to pale yellow flowers in umbels on the ends of branches.

Phebalium brachycalyx

Priority Three — Poorly Known Taxa (DEC)
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Rutaceae
Genus: Phebalium
Species:
P. brachycalyx
Binomial name
Phebalium brachycalyx
Paul G.Wilson[1]
Synonyms[1]

Phebalium tuberculosum (F.Muell.) Benth.

Description

Phebalium brachycalyx is a shrub that typically grows to a height of 0.4–1.5 m (1 ft 4 in–4 ft 11 in) and is more or less covered with silvery and rust-coloured scales. The leaves are narrow oblong, about 10–15 mm (0.39–0.59 in) long and about 1.5 mm (0.059 in) wide on a short petiole. The edge of the leaves are wavy-glandular and the mid-vein on the lower surface is warty. The flowers are white to pale yellow and arranged in umbels of three to six flowers, each flower on a thin pedicel 4–8 mm (0.16–0.31 in) long. The sepals are about 1 mm (0.039 in) long and joined for about half their length, scaly on the outside but glabrous inside. The petals are broadly elliptical, about 4 mm (0.16 in) long and 2 mm (0.079 in) wide, covered with silvery to rust-coloured scales on the outside. Flowering occurs from August to November.[2][3][4]

Taxonomy and naming

Phebalium brachycalyx was first formally described in 1998 by Paul Wilson in the journal Nuytsia from specimens collected at the south end of the Wongan Hills by Alex George.[3][5]

Distribution and habitat

Phebalium brachycalyx grows on laterite on hills between Dalwallinu and Kondinin.[2][4]

Conservation status

Phebalium brachycalyx is classified as "Priority Three" by the Government of Western Australia Department of Parks and Wildlife[2] meaning that it is poorly known and known from only a few locations but is not under imminent threat.[6]

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References
  1. "Phebalium brachycalyx". Australian Plant Census. Retrieved 15 June 2020.
  2. "Phebalium brachycalyx". 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): 75. Retrieved 15 June 2020.
  4. Wilson, Paul G. "Phebalium brachycalyx". Australian Biological Resources Study, Department of Agriculture, Water and the Environment, Canberra. Retrieved 15 June 2020.
  5. "Phebalium brachycalyx". APNI. Retrieved 15 June 2020.
  6. "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 14 June 2020.
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