Boronia heterophylla

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Red boronia
Boronia heterophylla foliage and flowers.jpg
Boronia heterophylla in the Australian National Botanic Gardens
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Rutaceae
Genus: Boronia
Species:
B. heterophylla
Binomial name
Boronia heterophylla
Boronia heterophylla DistMap57.png
Occurrence data from Australasian Virtual Herbarium
Synonyms [1]
  • Boronia heterophylla F.Muell. var. heterophylla
  • Boronia pteropoda Turcz.
  • Boronia heterophylla var. brevipes Hook.f.

Boronia heterophylla, commonly known as red boronia [2] or Kalgan boronia, [3] is a plant in the citrus family Rutaceae, and is endemic to the south-west of Western Australia. It is an erect, slender shrub with trifoliate leaves and deep pink to red, four-petalled flowers arranged singly in leaf axils.

Contents

Description

Boronia heterophylla is a shrub which grows to a height of 1–3 m (3–10 ft) and has slender branches. The leaves are usually trifoliate with linear leaflets 20–30 mm (0.8–1 in) long on a petiole 20–30 mm (0.8–1 in) long. The leaves are only rarely simple. The flowers are deep pink to red and arranged singly in leaf axils on a thin, top-shaped, hanging pedicel about 10 mm (0.4 in) long. The four sepals are more or less round with a pointed tip and 2–3 mm (0.08–0.1 in) long. The four petals are about 8 mm (0.3 in) long and hairy on the inner side. The eight stamens alternate in length. The stamens near the sepals are black, sterile and about 1.2 mm (0.05 in) long and the ones near the petals are fertile but only about 0.5 mm (0.02 in) long. Flowering from September to November. [4]

Taxonomy and naming

Boronia heterophylla was first formally described in 1860 by Ferdinand von Mueller and the description was published in Fragmenta phytographiae Australiae . [5] [6] The specific epithet (heterophylla) is derived from the ancient Greek words heteros (ἕτερος) meaning "different" and phyllon (φύλλον) meaning "leaf", [7] referring to the variable leaves. [2]

Distribution and habitat

The red boronia is usually found growing near streams between Busselton and Albany in the Esperance Plains, Jarrah Forest, Swan Coastal Plain and Warren biogeographic regions of Western Australia. [3]

Conservation

Boronia heterophylla is listed as "not threatened" by the Government of Western Australia Department of Parks and Wildlife. [3]

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References

  1. 1 2 "Boronia heterophylla". Australian Plant Census. Retrieved 6 February 2019.
  2. 1 2 "Boronia heterophylla". Australian National Botanic Gardens. Retrieved 7 February 2019.
  3. 1 2 3 "Boronia heterophylla". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. ↑ Duretto, Marco F.; Wilson, Paul G.; Ladiges, Pauline Y. "Boronia heterophylla". Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Retrieved 7 February 2019.
  5. ↑ "Boronia heterophylla". APNI. Retrieved 6 February 2019.
  6. ↑ von Mueller, Ferdinand (1860). Fragmenta phytographiae Australiae. Melbourne: Victorian Government Printer. p. 98. Retrieved 7 February 2019.
  7. ↑ Backer, C.A. (1936). Verklarend woordenboek der wetenschappelijke namen van de in Nederland en Nederlandsch-Indië in het wild groeiende en in tuinen en parken gekweekte varens en hoogere planten (Edition Nicoline van der Sijs).
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