Boronia odorata

Boronia odorata is a plant in the citrus family Rutaceae and is endemic to the central highlands of Queensland, Australia. It is an erect shrub with many branches, mostly simple leaves and pink to white, four-petalled flowers.

Boronia odorata
Boronia odorata in the Carnarvon National Park
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Rutaceae
Genus: Boronia
Species:
B. odorata
Binomial name
Boronia odorata
Duretto[1]
Occurrence data from Australasian Virtual Herbarium

Description

Boronia odorata is an erect, many-branched shrub which grows to a height of 2.0 m (7 ft) with its young branches densely covered with white to reddish brown hairs. Mature plants have simple leaves but the leaves of young plants are trifoliate. Mature leaves and the young leaflets are elliptic in shape, 12–40 mm (0.5–2 in) long and 4–8 mm (0.2–0.3 in) wide and the side leaflets are shorter and narrower. The leaves have a winged petiole 1–8 mm (0.04–0.3 in) long. Up to three pink to white flowers are arranged in leaf axils on a hairy stalk 1–2 mm (0.039–0.079 in) long. The four sepals are egg-shaped to triangular, 2–4.5 mm (0.079–0.18 in) long, 1–2.5 mm (0.039–0.098 in) wide and hairy. The four petals are 6–10 mm (0.24–0.39 in) long, 4–6 mm (0.16–0.24 in) wide and enlarge as the fruit develops. The eight stamens alternate in length, size and shape. Flowering occurs from February to October and the fruit are 5–7 mm (0.20–0.28 in) long and 3–3.5 mm (0.12–0.14 in) wide.[2]

Taxonomy and naming

Boronia odorata was first formally described in 1999 by Marco F. Duretto and the description was published in the journal Austrobaileya.[3] The specific epithet (odorata) is a Latin word meaning "having a smell" or "fragrant"[4] referring to the tar or coffee odour of the leaves when crushed.[2]

Distribution and habitat

This boronia grows in woodland on sandstone in the central highlands of Queensland in an area bounded by Springsure, Theodore, Surat, Mitchell and Tambo.[2]

Conservation

Boronia odorata is classed as "least concern" under the Queensland Government Nature Conservation Act 1992.[5]

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References
  1. "Boronia odorata". Australian Plant Census. Retrieved 17 March 2019.
  2. Duretto, Marco F. (1999). "Boronia sect. Valvatae (Benth.) Engl. (Rutaceae) in Queensland, Australia". Austrobaileya. 5 (2): 294–295.
  3. "Boronia odorata". APNI. Retrieved 9 February 2019.
  4. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 720.
  5. "Boronia odorata". The State of Queensland Department of Environment and Science. Retrieved 9 February 2019.
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