Olea

Olive tree ( Olea europaea subsp. Europaea)

Olive trees ( Olea ) are a genus of Oleaceae ( Olive Family ) with 40 to 50 species. The most famous representatives in Europe is the olive tree ( Olea europaea).

Description

Olive trees are evergreen trees and shrubs. The simple leaves are opposite, simple and petiolate, the lamina is entire or toothed.

The inflorescences arise from the leaf axils or terminal racemes, sometimes grapes or umbels. The flowers are hermaphrodite or unisexual both, so there are both male, female and hermaphrodite plants. The calyx is small, bell-shaped and vierlappig, mostly hairy lobes are triangular or ovate. The crown is also vierlappig and has a short tube. There are four to two stamens that are attached at the base of the corolla tube, the stamens are short or absent, the anthers are elliptical, ovate or nearly round. There are two carpels per flower, the style is short or missing. The fruits are drupes with a thick and solid endocarp and usually only one seed.

Dissemination

The genus Olea is purely altweltlich, she finds herself in Europe, Africa, Asia, Australia and the Pacific Islands.

System

The genus Olea includes 40 to 50 species ( selection):

  • Olea ambrensis H.Perrier, the home is Madagascar.
  • Olea borneensis Boerl. , The home is the tropical Asia.
  • Olea brachiata ( Lour. ) Merr. , Home to the temperate zones of Asia.
  • Olea capensis L., is common in Africa.
  • Olea caudatilimba L.C.Chia, the home is China.
  • Olea Chimanimani Kupicha, the home is the southern tropical Africa.
  • Olea cordatula H.L.Li, the home is Vietnam.
  • Olea dioica Roxb. , The home is the tropical Asia.
  • Olive tree, olive tree ( Olea europaea L. ), several subspecies.
  • Olea exasperata Jacq., The home is the capensis.
  • Olea gagnepainii Knobl. , The home is Indochina.
  • Olea gamblei CBClarke, home to the Indian subcontinent.
  • Olea guangxiensis
  • Olea hainanensis H.L.Li; the home is China and Indochina.
  • Olea javanica (Blume ) Knobl. , The home is Malaysia and the Philippines.
  • Olea lancea Lam., The home is Madagascar, Mauritius and Réunion.
  • Olea laxiflora H.L.Li, the home is China.
  • Olea laurifolia Lam., Is referred to in Natal / South Africa as a black ironwood tree.
  • Olea moluccensis Kiev, the home is Indonesia.
  • Olea neriifolia H.L.Li, the home is China.
  • Olea obovata ( Merr. ) Kiev, home to the Philippines.
  • Olea palawanensis Kiev, home to the Philippines.
  • Olea paniculata R.Br., common in China, Indochina, Indian Subcontinent, Malaysia, Australia, New Caledonia. 15 to 18 m tall tree of very hard wood produced.
  • Olea parvilimba ( Merr. & Chun ) BM Miao, the home is China and Indochina.
  • Olea polygama Wight, home to the Indian subcontinent.
  • Olea rosea Craib, the home is China and Indochina.
  • Olea rubrovenia ( Elmer) Kiev, the home is Malaysia.
  • Olea salicifolia Wall. ex G.Don, the home is the warm temperate to tropical Asia.
  • Olea schliebenii Knobl. , The home is Tanzania.
  • Olea tetragonoclada LCChia, the home is China.
  • Olea tsoongii ( Merr. ) PS Green, the home is China.
  • Olea welwitschii ( Knobl. ) Gilg & G. Schellenb. , The home is central to South Africa.
  • Olea wightiana Wall. ex G. Don, the home is India.
  • Olea woodiana Knobl. , The home is central to South Africa.
  • Olea yuennanensis Hand. - Mazz., The home is China.

Evidence

  • Mei - chen Chang, Lien -ching Chiu, Zhi Wei, Peter S. Green: Oleaceae. In: Wu Zheng -yi, Peter H. Raven (eds.): Flora of China. Volume 15: Myrsinaceae through Loganiaceae, Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 1996, ISBN 0-915279-37-1, p 295 (online).
Asterids
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