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Quercus gaharuensis Soepadmo

Quercus gaharuensis

provided by wikipedia EN

Quercus gaharuensis is a species of oak native to Borneo, Sumatra, and Peninsular Malaysia.[1][2] It is placed in Quercus subgenus Cerris, section Cyclobalanopsis.[3]

Range and habitat

Quercus gaharuensis is known from widely scattered sites in Sumatra, Peninsular Malaysia, and Borneo (East Kalimantan, Sarawak, and Sabah).[1]

It grows in lowland mixed dipterocarp rain forests and lower montane rain forests up to 1,400 metres elevation.[1]

Conservation

Quercus gaharuensis is threatened with habitat loss from widepread deforestation across its range. The populations in northern Sumatra, comprising 25% of the species' known sites, are in or adjacent to protected areas. The known sites in central Sumatra and on Borneo are unprotected and have been logged or converted to agriculture.[1]

References

  1. ^ a b c d e Carrero, C. & Strijk, J.S. 2020. Quercus gaharuensis. The IUCN Red List of Threatened Species 2020: e.T194131A184349359. https://dx.doi.org/10.2305/IUCN.UK.2020-3.RLTS.T194131A184349359.en. Accessed 27 March 2023.
  2. ^ Quercus gaharuensis Soepadmo. Plants of the World Online, Kew Science. Accessed 27 March 2023.
  3. ^ Denk, Thomas; Grimm, Guido W.; Manos, Paul S.; Deng, Min & Hipp, Andrew L. (2017). "Appendix 2.1: An updated infrageneric classification of the oaks" (xls). figshare. Retrieved 2023-02-24.
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Quercus gaharuensis: Brief Summary

provided by wikipedia EN

Quercus gaharuensis is a species of oak native to Borneo, Sumatra, and Peninsular Malaysia. It is placed in Quercus subgenus Cerris, section Cyclobalanopsis.

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Quercus gaharuensis ( Polish )

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Quercus gaharuensis Soepadmo – gatunek roślin z rodziny bukowatych (Fagaceae Dumort.). Występuje naturalnie w Malezji oraz Indonezji (na Sumatrze i w Kalimantanie)[3][4].

Morfologia

Pokrój
Zimozielone drzewo dorastające do 35 m wysokości. Pień wyposażony jest w korzenie podporowe. Kora jest gładka i ma brązowoszarawą barwę[4].
Liście
Blaszka liściowa jest nieco skórzasta i ma podługowato eliptyczny lub odwrotnie jajowaty kształt. Mierzy 5–20 cm długości oraz 3,5–9 cm szerokości, jest szeroko klapowana na brzegu, ma ostrokątną nasadę i tępy wierzchołek. Ogonek liściowy jest nagi i ma 10–20 mm długości. Przylistki mają równowąski kształt i osiągają 5 mm długości[4].
Owoce
Orzechy zwane żołędziami o jajowatym kształcie, dorastają do 35 mm długości i 18 mm średnicy. Osadzone są pojedynczo w łuskowatych miseczkach mierzących 20 mm średnicy[4].

Biologia i ekologia

Rośnie w lasach. Występuje na wysokości do 1400 m n.p.m.[4]

Przypisy

  1. Stevens P.F.: Angiosperm Phylogeny Website (ang.). 2001–. [dostęp 2017-04-04].
  2. Quercus gaharuensis Soepadmo (ang.). The Plant List. [dostęp 4 kwietnia 2017].
  3. Discover Life: Point Map of Quercus gaharuensis (ang.). Encyclopedia of Life. [dostęp 4 kwietnia 2017].
  4. a b c d e Quercus gaharuensis (fr.). Plantes & botanique. [dostęp 4 kwietnia 2017].
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Quercus gaharuensis: Brief Summary ( Polish )

provided by wikipedia POL

Quercus gaharuensis Soepadmo – gatunek roślin z rodziny bukowatych (Fagaceae Dumort.). Występuje naturalnie w Malezji oraz Indonezji (na Sumatrze i w Kalimantanie).

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Quercus gaharuensis ( Vietnamese )

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Quercus gaharuensis là một loài thực vật có hoa trong họ Cử. Loài này được Soepadmo miêu tả khoa học đầu tiên năm 1966.[1]

Chú thích

  1. ^ The Plant List (2010). Quercus gaharuensis. Truy cập ngày 4 tháng 6 năm 2013.

Tham khảo


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Quercus gaharuensis: Brief Summary ( Vietnamese )

provided by wikipedia VI

Quercus gaharuensis là một loài thực vật có hoa trong họ Cử. Loài này được Soepadmo miêu tả khoa học đầu tiên năm 1966.

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