Geijera

Geijera is a genus of shrubs and trees in the family Rutaceae and are native to New Guinea, Australia and New Caledonia. They have simple leaves arranged alternately, panicles of bisexual flowers usually with five, sometimes four, sepals, petals and stamens and fruit containing shiny black seeds.

Geijera
Geijera parviflora
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Rutaceae
Genus: Geijera
Schott[1]

Description

Plants in the genus Geijera are shrubs or trees with simple leaves arranged alternately. They have small, bisexual flowers arranged in many-flowered panicles in upper leaf axils and on the ends of branchlets and usually have five, sometimes four sepals, petals and stamens. The sepals are fused at the base, up to 1 mm (0.039 in) long, and persist in the fruit. The petals are white or cream-coloured, up to 2 mm (0.079 in) long and the stamens are up to 1.5 mm (0.059 in) long and arranged opposite the sepals. The fruit consists of up to five more or less spherical follicles joined at the base each with a single shiny black seed.[2][3][4]

Taxonomy

The genus Geijera was first formally described in 1834 by Schott in his book Rutaceae - Fragmenta Botanica and the first species to be describe (the type species) was Geijera salicifolia.[5] The name Geijera honours J.D. Geijer, a 17th century Swedish botanist.[2]

Species list

The following is a list of species accepted by the Australian Plant Census,[6] or Plants of the World Online*[7] for species outside Australia:

Plants of the World Online includes G. helmsiae and G. paniculata but the Australian Plants Census lists these as synonyms of Coatesia paniculata.[8]

Distribution and habitat

Most species of Geijera grow in tropical or subtropical rainforest. Three species occur on New Caledonia, and three in Australia, two of which are endemic.[3]

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References
  1. "Geijera". Australian Plant Census. Retrieved 20 July 2020.
  2. Hartley, Thomas G.; Wilson, Annette J.G. (ed.) (2013). Flora of Australia (Volume 26). Canberra: Australian Biological Resources Study. p. 78. Retrieved 20 July 2020.CS1 maint: extra text: authors list (link)
  3. Duretto, Marco F. "Geijera". Royal Botanic Gardens Victoria. Retrieved 20 July 2020.
  4. Duretto, Marco F/. "Genus Geijera". Royal Botanic Garden Sydney. Retrieved 20 July 2020.
  5. "Geijera". APNI. Retrieved 20 July 2020.
  6. "Geijera". Australian Plant Census. Retrieved 20 July 2020.
  7. "Geijera". Plants of the World Online. Retrieved 20 July 2020.
  8. "Coatesia paniculata". Australian Plant Census. Retrieved 20 July 2020.
  • Media related to Geijera at Wikimedia Commons
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