Boronia suberosa

Boronia suberosa is a species of plant in the citrus family Rutaceae and is endemic to a small area in the Northern Territory, Australia. It is a shrub with weeping branches, simple leaves, and flowers with four small, white petals.

Boronia suberosa
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Rutaceae
Genus: Boronia
Species:
B. suberosa
Binomial name
Boronia suberosa
Occurrence data from Australasian Virtual Herbarium

Description

Boronia suberosa is a shrub with weeping branches up to 50 cm (20 in). Its branches are covered with star-shaped hairs when young but become very corky with age. The leaves are simple, elliptic to lance-shaped, 7–20 mm (0.28–0.79 in) long and 3–11 mm (0.12–0.43 in) wide on a petiole up to 3 mm (0.12 in) long. The flowers are borne singly, on a peduncle 0.5–1 mm (0.02–0.04 in) long. The sepals are green, egg-shaped to triangular, 3–5 mm (0.12–0.20 in) long, 2–3 mm (0.08–0.1 in) wide and larger than the petals. The petals are white, 2.5–3 mm (0.098–0.12 in) long and both the sepals and petal enlarge as the fruit develops. Flowering occurs between February and May and the fruit is a more or less hairy capsule 3.5–5 mm (0.14–0.20 in) long and 2–2.5 mm (0.079–0.098 in) wide.[2][3][4]

Taxonomy and naming

Boronia suberosa was first formally described in 1997 by Marco F. Duretto who published the description in the journal Austrobaileya.[5] The specific epithet (suberosa) is a Latin word meaning "corky".[6]

Distribution and habitat

This boronia grows on sandstone rocks and cliff faces and is only known from the Ja Ja formation in Kakadu National Park.[2][3][4]

Conservation status

This species is listed as "near threatened" under the Territory Parks and Wildlife Conservation Act 2000.[3]

References
  1. "Boronia suberosa". Australian Plant Census. Retrieved 5 May 2019.
  2. Duretto, Marco F. (1999). "Systematics of Boronia section Valvatae sensu lato(Rutaceae)" (PDF). Muelleria. 12 (1): 95–96. Retrieved 5 May 2019.
  3. "Boronia suberosa". Northern Territory Government flora online. Retrieved 5 May 2019.
  4. Duretto, Marco F.; Wilson, Paul G.; Ladiges, Pauline Y. "Boronia suberosa". Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Retrieved 5 May 2019.
  5. "Boronia suberosa". APNI. Retrieved 5 May 2019.
  6. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 123.
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