Boronia glabra

Boronia glabra, commonly known as sandstone boronia,[2] is a plant in the citrus family Rutaceae and is endemic to eastern Australia. It is an erect or weak shrub with many branches, mostly glabrous leaves with a slightly paler underside, and bright pink, four-petalled flowers arranged singly in leaf axils.

Boronia glabra
Boronia glabra 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. glabra
Binomial name
Boronia glabra
Occurrence data from Australasian Virtual Herbarium

Description

Boronia glabra is an erect or weak, many-branched shrub which grows to a height of 0.4–1.5 m (1–5 ft) with its young branches covered with white hairs. The leaves are elliptic, 5–35 mm (0.2–1 in) long and 1.5–7 mm (0.06–0.3 in) wide with a paler underside. Bright pink flowers are arranged singly in leaf axils on a pedicel 1–6 mm (0.039–0.24 in) long. The four sepals are egg-shaped to triangular, about 3 mm (0.12 in) long and 1–2 mm (0.039–0.079 in) wide. The four petals are 4–7 mm (0.16–0.28 in) long, 2.5–3.5 mm (0.098–0.14 in) wide but enlarge as the fruit develop. The eight stamens have glandular hairs near the tip. Flowering occurs from July to October and the fruit are 5–6 mm (0.20–0.24 in) long and 2–3 mm (0.079–0.12 in) wide.[3][4]

Taxonomy and naming

Sandstone boronia was first formally described in 1899 by Joseph Maiden and Ernst Betche and given the name Boronia ledifolia var. glabra and the description was published in the journal Proceedings of the Linnean Society of New South Wales from a specimen collected near Peak Hill.[5] In 1928, Edwin Cheel raised the variety to species status.[1] The specific epithet (glabra) is a Latin word meaning "hairless", "bald" or "smooth".[6]

Distribution and habitat

This boronia grows in open woodland between Eidsvold in Queensland and Cowra in New South Wales.[3][4]

Conservation

Boronia glabra is classed as "least concern" under the Queensland Government Nature Conservation Act 1992.[7]

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References
  1. "Boronia glabra". APNI. Retrieved 1 February 2019.
  2. Quattrocchi, Umberto (2000). CRC world dictionary of plant names : common names, scientific names, eponyms, synonyms, and etymology. CRC Press. p. 327. ISBN 0849326753.
  3. Duretto, Marco F. (1999). "Systematics of Boronia section Valvatae sensu lato (Rutaceae)" (PDF). Muelleria. 12 (1): 83–84. Retrieved 1 February 2019.
  4. Weston, Peter H.; Duretto, Marco F. "Boronia glabra". Royal Botanic Garden Sydney. Retrieved 1 February 2019.
  5. "Boronia ledifolia var. glabra". APNI. Retrieved 1 February 2019.
  6. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 122.
  7. "Boronia glabra". The State of Queensland Department of Environment and Science. Retrieved 1 February 2019.
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