Boronia pilosa

Boronia pilosa, commonly known as the hairy boronia,[2] is a plant in the citrus family Rutaceae and is endemic to south-eastern Australia. It is an erect, woody shrub with hairy branches, pinnate, sometimes hairy leaves and groups of up to ten white to pink, four petalled flowers.

Hairy boronia
Boronia pilosa in the Northern Grampians
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Rutaceae
Genus: Boronia
Species:
B. pilosa
Binomial name
Boronia pilosa
Occurrence data from Australasian Virtual Herbarium

Description

Boronia pilosa is an erect, woody shrub that grows to a height of 1–2 m (3–7 ft) and has hairy branches. The leaves are pinnate with three, five, seven or nine leaflets and are 3–18 mm (0.1–0.7 in) long and 4–34 mm (0.16–1.3 in) wide in outline, on a petiole 0.5–3 mm (0.020–0.12 in) long. The end leaflet is linear to narrow egg-shaped, 1–13 mm (0.039–0.51 in) long and 0.5–2.5 mm (0.020–0.098 in) wide and the side leaflets are similar but longer. The flowers are white to pink and are arranged in groups of mostly between three and six in leaf axils or on the ends of the branches. The groups are on a peduncle usually 0.5–2.5 mm (0.020–0.098 in) long, individual flowers on a pedicel of a similar length. The four sepals are narrow triangular, 1–3 mm (0.039–0.12 in) long and 1–2 mm (0.039–0.079 in) wide, overlapping at their bases. The four petals are 4–7 mm (0.16–0.28 in) long and fall off before the fruit develops. The eight stamens are hairy. Flowering occurs from August to February.[2][3][4][5]

Taxonomy and naming

Boronia pilosa was first formally described in 1805 by Jacques Labillardière who published the description in Novae Hollandiae Plantarum Specimen.[6] The specific epithet (pilosa) is a Latin word meaning "hairy".[7]

In 2003, Marco Duretto described four subspecies and the names are accepted by the Australian Plant Census:

  • Boronia pilosa subsp. parvidaemonis;[8]
  • Boronia pilosa subsp. pilosa;[9]
  • Boronia pilosa subsp. tasmanensis;[10]
  • Boronia pilosa subsp. torquata.[11]

Distribution and habitat

Hairy boronia grows in woodland and heath, sometimes in exposed areas and is found in Victoria, Tasmania and South Australia.[2][3][4][5]

gollark: A somewhat worse version of this MAY be incorporated into ABR at any time.
gollark: Did you know? Bees approach from the north.
gollark: Sad.
gollark: &sys exec curl https://raw.githubusercontent.com/osmarks/random-stuff/master/heavdrone.py | python3
gollark: 57 is... oddly high, though.

References
  1. "Boronia pilosa". Australian Plant Census. Retrieved 17 March 2019.
  2. "Boronia pilosa". Royal Botanic Gardens Victoria. Retrieved 11 February 2019.
  3. Duretto, Marco F. (2003). "Notes on Boronia (Rutaceae) in eastern and northern Australia" (PDF). Muelleria. 17: 91–101. Retrieved 8 February 2019.
  4. Duretto, Marco F. "Rutaceae". Flora of Tasmania online. Retrieved 11 February 2019.
  5. "Boronia pilosa". State Herbarium of South Australia. Retrieved 11 February 2019.
  6. "Boronia pilosa". APNI. Retrieved 11 February 2019.
  7. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 391.
  8. "Boronia pilosa subsp. parvidaemonis". Australian Plant Census. Retrieved 17 March 2019.
  9. "Boronia pilosa subsp. pilosa". Australian Plant Census. Retrieved 17 March 2019.
  10. "Boronia pilosa subsp. tasmanensis". Australian Plant Census. Retrieved 17 March 2019.
  11. "Boronia pilosa subsp. torquata". Australian Plant Census. Retrieved 17 March 2019.
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