Acradenia

Acradenia is a genus of two species of tree or shrub in the family Rutaceae and is endemic to Australia. These plants have leaves that are trifoliate, arranged in opposite pairs and flowers that have five sepals, five petals and usually ten stamens of unequal lengths.

Acradenia
Acradenia euodiiformis in the ANBG
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Rutaceae
Genus: Acradenia
Kippist[1]
Species
Synonyms[1]

Luerssenidendron Domin

Description

Plants in the genus Acradenia are evergreen trees, sometimes shrubs with trifoliate leaves arranged in opposite pairs and lacking domatia. The flowers are arranged in panicles in leaf axils or on the ends of branchlets. The flowers are bisexual usually with five (rarely six) sepals and petals. The sepals are 1–1.5 mm (0.039–0.059 in) long, joined at the base and remain attached to the fruit. The petals overlap at the base and there are twice as many stamens as petals, usually alternating in length. There are usually five carpels in each ovary and two ovules in each locule. The fruit has up to five follicles joined at the base, each follicle with a single, smooth brown seed about 5 mm (0.20 in) long.[2][3]

Taxonomy

The genus Acradenia was first formally described in 1853 by Richard Kippist in the Proceedings of the Linnean Society of London and the first species described was A. frankliniae.[4][5]

The closest relative to Acradenia is Crossosperma from New Caledonia.[6]

Species

References
  1. "Acradenia". Australian Plant Census. Retrieved 23 June 2020.
  2. "Acradenia Kippist". Australian Biological Resources Study, Department of Agriculture, Water and the Environment. Retrieved 23 June 2020.
  3. Richards, P.G. "Genus Acradenia". Royal Botanic Garden Sydney. Retrieved 23 June 2020.
  4. "Acradenia". APNI. Retrieved 24 June 2020.
  5. Kippist, Richard (1853). "Acradenia". Proceedings of the Linnean Society of London. 2: 201–202. Retrieved 24 June 2020.
  6. Bayly, M.J.; Holmes, G.D.; Forster, P.I.; Cantrill, D.J.; Ladiges, P.Y. (2013). "Major Clades of Australasian Rutoideae (Rutaceae) Based on rbcL and atpB Sequences". PLoS ONE. 8 (8): e72493. doi:10.1371/journal.pone.0072493. PMC 3742607. PMID 23967311.
  7. "Acradenia euodiiformis". Australian Plant Census. Retrieved 24 June 2020.
  8. "Acradenia frankliniae". Australian Plant Census. Retrieved 24 June 2020.
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