Acronychia imperforata

Acronychia imperforata, commonly known as Logan apple, Fraser Island apple, or green tree,[2] is a species of rainforest shrub or small tree that is endemic to north-eastern Australia. It has simple, elliptical to egg-shaped leaves, small groups of yellowish or creamy white flowers and fleshy spherical to oval fruit.

Logan apple
Acronychia imperforata in the ANBG
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Rutaceae
Genus: Acronychia
Species:
A. imperforata
Binomial name
Acronychia imperforata
Fruit

Description

Acronychia imperforata is a shrub or tree that typically grows to a height of 9–10 m (30–33 ft). Its leaves are arranged in opposite pairs, simple, more or less glabrous and elliptical to egg-shaped with the narrower end towards the base, 33–133 mm (1.3–5.2 in) long and 16–60 mm (0.63–2.36 in) wide on a petiole 3–25 mm (0.12–0.98 in) long. The flowers are yellowish or creamy white and arranged in leaf axils in small cymes 20–50 mm (0.79–1.97 in) long, each flower on a pedicel 1.5–4.5 mm (0.059–0.177 in) long. The four sepals are 1.5–2.5 mm (0.059–0.098 in) wide and the four petals 5.5–9 mm (0.22–0.35 in) long and there are eight stamens that alternate in length. Flowering occurs in most months and the fruit is a fleshy, yellowish, pear-shaped to more or less spherical drupe 9–16 mm (0.35–0.63 in) long containing seeds 4–6 mm (0.16–0.24 in) long.[2][3][4][5]

Taxonomy

Acronychia imperforata was first formally described in 1858 by Ferdinand von Mueller in Fragmenta phytographiae Australiae.[6][7]

Distribution and habitat

Logan apple grows in rainforest in near-coastal areas between Somerset on Cape York in north-eastern Queensland and Seal Rocks in New South Wales.[2][4]

Conservation status

This acronychia is classified as of "least concern" under the Queensland Government Nature Conservation Act 1992.[8]

References
  1. "Acronychia imperforata". Australian Plant Census. Retrieved 2 July 2020.
  2. Hartley, Thomas G. (2013). Wilson, Annette J.G. (ed.). Flora of Australia (Volume 26). Canberra: Australian Biological Resources Study. p. 118. Retrieved 3 July 2020.
  3. Richards, P.G.; Harden, Gwen J. "Acronychia imperforata T.G.Hartley". Royal Botanic Garden Sydney. Retrieved 3 July 2020.
  4. F.A.Zich; B.P.M.Hyland; T.Whiffen; R.A.Kerrigan (2020). "Acronychia imperforata". Australian Tropical Rainforest Plants Edition 8 (RFK8). Centre for Australian National Biodiversity Research (CANBR), Australian Government. Retrieved 1 July 2021.
  5. Hartley, Thomas G. (1974). "A revision of the genus Acronychia (Rutaceae)". Journal of the Arnold Arboretum. 55 (3): 457–549. doi:10.5962/p.324717. Retrieved 3 July 2020.
  6. "Acronychia imperforata". APNI. Retrieved 3 July 2020.
  7. von Mueller, Ferdinand (1858). Fragmenta phytographiae Australiae. Melbourne: Victorian Government Printer. p. 26. Retrieved 3 July 2020.
  8. "Species profile - Acronychia imperforata (beach acronychia)". Queensland Government Department of Environment and Science. Retrieved 3 July 2020.
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