Boronia anethifolia

Boronia anethifolia, commonly known as narrow-leaved boronia,[2] is a plant in the citrus family, Rutaceae and is endemic to eastern Australia. It is an erect shrub with four-angled branches, bipinnate leaves and white, sometimes pale pink, four-petalled flowers.

habit in the Gibraltar Range National Park

Narrow-leaved boronia
Boronia anethifolia leaves and flowers
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Rutaceae
Genus: Boronia
Species:
B. anethifolia
Binomial name
Boronia anethifolia
Occurrence data from Australasian Virtual Herbarium

Description

Boronia anethifolia is an erect shrub that grows to a height of 0.3–1 m (1–3 ft) with four-angled, glabrous stems with prominent leaf scars. The leaves are bipinnate, 20–40 mm (0.79–1.6 in) long and 15–40 mm (0.59–1.6 in) wide in outline and have a petiole 6–15 mm (0.24–0.59 in) long. The leaves have between five and eleven glabrous, linear to narrow elliptic leaflets. The end leaflet is 3–14 mm (0.1–0.6 in) long and 0.5–2 mm (0.02–0.08 in) wide, the others usually slightly longer. The flowers are white, sometimes pale pink and are arranged in leaf axils, mainly in groups of between three and fourteen or more. The groups are borne on a peduncle 2–6 mm (0.08–0.2 in) long. The four sepals are triangular to broadly egg-shaped, about 1 mm (0.04 in) long and wide. The four petals are 3–4 mm (0.1–0.2 in) long with their bases overlapping. The eight stamens have hairy edges. Flowering occurs from April to October and the fruit are glabrous, 2.5–4 mm (0.098–0.16 in) long and about 2 mm (0.079 in) wide.[2][3]

Taxonomy and naming

Boronia anethifolia was first formally described in 1863 by Stephan Endlicher from an unpublished manuscript by Allan Cunningham and the description was published in Enumeratio plantarum quas in Novae Hollandiae ora austro-occidentali ad fluvium Cygnorum et in sinu Regis Georgii collegit Carolus Liber Baro de Hügel.[4] The specific epithet (anethifolia) refers to the deeply divided leaves with narrow leaflets which resemble those of dill (Anethum) in the family Apiaceae.[2]

Distribution and habitat

This boronia grows in heath and forest and in rocky slopes and ridges between the Border Ranges in Queensland and Wadbilliga Mountain in southern New South Wales.[2][3]

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References
  1. "Boronia anethifolia". Australian Plant Census. Retrieved 3 July 2019.
  2. Duretto, Marco F. (1999). "Notes on Boronia (Rutaceae) in eastern and northern Australia" (PDF). Muelleria. 17: 26–29. Retrieved 24 January 2019.
  3. Weston, Peter H.; Duretto, Marco F. "Boronia anethifolia". Royal Botanic Garden Sydney. Retrieved 25 January 2019.
  4. "Boronia anethifolia". APNI. Retrieved 25 January 2019.
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