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Octarrhena

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Octarrhena, commonly known as grub orchids,[3] is a genus of flowering plants from the orchid family, Orchidaceae. Plants in this genus are small, orchids with short stems, thin roots, short, thick, fleshy leaves arranged in two ranks and tiny flowers. The labellum is rigidly attached to the base of the column. There are about fifty species native to areas from Sri Lanka and Malesia to the Western Pacific.

Description

Orchids in the genus Octarrhena are small epiphytic, lithophytic or terrestrial herbs with thin roots and short stems with short, thick, fleshy leaves, their bases sheathing the stem. A large number of tiny, usually white, cream-coloured, yellowish or greenish flowers are arranged on a flowering stem arising from a leaf axil. The sepals and petals are free from each other, the petals usually much smaller than the sepals. The labellum is small, unlobed, rigidly fixed to the column and lacks a spur.[3][4][5]

Taxonomy and naming

The genus Octarrhena was first formally described in 1861 by George Henry Kendrick Thwaites who published the description in Enumeratio plantarum Zeylaniae.[1][6] The name Octarrhena is derived from the Ancient Greek words okto meaning "eight"[7]: 296  and arrhen meaning "male" or "masculine",[7]: 509  referring the eight free pollinia in the anther.[4]

Species list

The following is a list of species of Octarrhena recognised by the World Checklist of Selected Plant Families as at January 2019:[1]

Distribution

Orchids in the genus Octarrhena are found in Sri Lanka, Vietnam, Borneo, Java, Peninsular Malaysia, the Philippines, Sulawesi, Sumatra, the Bismarck Archipelago, New Guinea, the Solomon Islands, Queensland (Australia), Fiji, New Caledonia, Vanuatu and the Caroline Islands.[1]

References

  1. ^ a b c d e "Octarrhena". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
  2. ^ Hooker, William J. (1892). Icones Plantarum. Vol. 21. London. p. 2084. Retrieved 17 June 2021.
  3. ^ a b Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. p. 471. ISBN 1877069124.
  4. ^ a b D.L.Jones; T.Hopley; S.M.Duffy (2010). "Octarrhena". Australian Tropical Rainforest Orchids. Centre for Australian National Biodiversity Research (CANBR), Australian Government. Retrieved 28 May 2021.
  5. ^ "Genus Octarrhena". Orchids of New Guinea. Retrieved 16 January 2019.
  6. ^ Thwaites, George H.K. (1861). Enumeratio plantarum Zeylaniae. London: Dulau & Co. p. 305. Retrieved 16 January 2019.
  7. ^ a b Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press.

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Octarrhena: Brief Summary

provided by wikipedia EN

Octarrhena, commonly known as grub orchids, is a genus of flowering plants from the orchid family, Orchidaceae. Plants in this genus are small, orchids with short stems, thin roots, short, thick, fleshy leaves arranged in two ranks and tiny flowers. The labellum is rigidly attached to the base of the column. There are about fifty species native to areas from Sri Lanka and Malesia to the Western Pacific.

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Octarrhena ( Spanish; Castilian )

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Octarrhena es un género que tiene asignada unas 50 especies de orquídeas epifitas originarias de Sri Lanka, Malasia y oeste del Pacífico.

Etimología

El nombre botánico Octarrhena proviene de las palabras griegas octa = (ocho) y arrhen = estambre para indicar que tiene ocho polinias.

Descripción

Son especies diminutas de hábito epifita de Malasia con una gran mayoría de especies en Nueva Guinea, son pequeñas con cortos tallos y hojas agudas que florece en inflorescencias axilares. Las flores son muy pequeñas y se abren simultáneamente. Se caracteriza por tener ocho polinias.

Especies de Octarrhena

Referencias

  1. «Octarrhena». Royal Botanic Gardens, Kew: World Checklist of Selected Plant Families. Consultado el 26 de septiembre de 2009.

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Octarrhena: Brief Summary ( Spanish; Castilian )

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Octarrhena es un género que tiene asignada unas 50 especies de orquídeas epifitas originarias de Sri Lanka, Malasia y oeste del Pacífico.

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Octarrhena ( Dutch; Flemish )

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Octarrhena is een geslacht met ongeveer vijftig soorten orchideeën uit de onderfamilie Epidendroideae.

Het zijn voornamelijk kleine, succulente, epifytische orchideeën uit de regenwouden van Nieuw-Guinea.

Naamgeving en etymologie

  • Synoniem: Chitonanthera Schltr. (1905); Kerigomnia P.Royen (1976); Vonroemeria J.J.Sm. (1910)

De botanische naam Octarrhena is een samenstelling van Oudgrieks ὀκτώ, oktō (acht) en ἄρρην, arrhēn (man, meeldraad),[bron?] naar de acht pollinia.

Kenmerken

Octarrhena-soorten zijn kleine atypische epifytische orchideeën met korte, bladachtige stengels en twee rijen in doorsnede afgeplat-ronde, spitse, lijnvormige blaadjes. De bloeiwijze is een laterale aar dicht bezet met kleine witte of gele bloempjes die alle gelijktijdig opengaan.

De kelkbladen zijn groter dan de kroonbladen, de bloemlip niet gelobd, het gynostemium bezit geen voet. Er zijn acht pollinia.

Habitat en verspreiding

Octarrhena-soorten groeien op boomstronken, takken en (zelden) op de grond in de droge, warme laagland- en laaggebergtewouden van Zuidoost-Azië, van Sri Lanka over Maleisië, Java, Sumatra, Borneo tot in Nieuw-Guinea.

Taxonomie

Het geslacht telt ongeveer vijftig soorten. De typesoort is Octarrhena parvula.

Soortenlijst

Zie ook

Bronnen, noten en/of referenties
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wikipedia NL

Octarrhena: Brief Summary ( Dutch; Flemish )

provided by wikipedia NL

Octarrhena is een geslacht met ongeveer vijftig soorten orchideeën uit de onderfamilie Epidendroideae.

Het zijn voornamelijk kleine, succulente, epifytische orchideeën uit de regenwouden van Nieuw-Guinea.

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Octarrhena ( Portuguese )

provided by wikipedia PT

Octarrhena é um género botânico pertencente à família das orquídeas (Orchidaceae).[1]

Ver também

Referências

  1. «pertencente à — World Flora Online». www.worldfloraonline.org. Consultado em 19 de agosto de 2020

Referências

  • L. Watson and M. J. Dallwitz, The Families of Flowering Plants, Orchidaceae Juss.
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Octarrhena: Brief Summary ( Portuguese )

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Octarrhena é um género botânico pertencente à família das orquídeas (Orchidaceae).

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Octarrhena ( Vietnamese )

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Octarrhena là một chi thực vật có hoa trong họ, Orchidaceae.

Xem thêm

Tham khảo

  • Pridgeon, A.M., Cribb, P.J., Chase, M.A. & Rasmussen, F. eds. (1999). Genera Orchidacearum 1. Oxford Univ. Press.
  • Pridgeon, A.M., Cribb, P.J., Chase, M.A. & Rasmussen, F. eds. (2001). Genera Orchidacearum 2. Oxford Univ. Press.
  • Pridgeon, A.M., Cribb, P.J., Chase, M.A. & Rasmussen, F. eds. (2003). Genera Orchidacearum 3. Oxford Univ. Press
  • Berg Pana, H. 2005. Handbuch der Orchideen-Namen. Dictionary of Orchid Names. Dizionario dei nomi delle orchidee. Ulmer, Stuttgart


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Octarrhena: Brief Summary ( Vietnamese )

provided by wikipedia VI

Octarrhena là một chi thực vật có hoa trong họ, Orchidaceae.

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cc-by-sa-3.0
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Wikipedia tác giả và biên tập viên
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wikipedia VI