Quercus disciformis
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Ordo: Fagales
Familia: Fagaceae
Genus: Quercus
Name
Quercus disciformis Chun & Tsiang., J. Arnold Arbor. 28: 324 (1947) – Wikispecies link – Pensoft Profile
- Cyclobalanopsis disciformis (Chun & Tsiang) Y.C. Hsu & H.W. Jen, Acta Bot. Yunnan. 1: 148 (1979).
Type
CHINA. “Hsin-I Hsien, Ling-Tung Pao, Chung-Tung”, 3 Aug. 1931, C. Wang 31087 (holotype-IBK [catalogue no. IBK00081941, image!], isotype-IBSC [catalogue no. 0117316, image!]).
Specimens examined in Vietnam
Ha Noi, Ba Vi District, Ba Vi National Park, in evergreen forest: alt. 737 m, 21°04'33.88"N, 105°22'03"E, 12 Sept. 2016, Binh et al. V 6052, V6053, V6058 [fr.] (FU); alt. 1172 m, 21°03'34.1"N, 105°21'54.1"E, 11 Sep. 2016, Binh et al. V6040 [fr.] (FU).
Distribution
China (Guangdong, Guangxi, Guizhou, Hainan, Hunan) and Vietnam (Ba Vi National Park).
Ecology in Vietnam
In the field survey, only three individuals were found at an altitude of 737 m and one at 1172 m; in evergreen forest.
Phenology
Flowering from March to April, fruiting from August to September in China (Huang 1999). Fruiting in September in Vietnam.
GenBank accession no
Binh et al. V6058: LC331258 (rbcL), LC331255 (matK).
Preliminary conservation status
Quercus disciformis is widely distributed from Guizhou to Guangdong and Hainan in China and not recorded as a threatened species in IUCN (2017)[1]. The Vietnamese population in Ba Vi National Park extends its distribution range, representing the south western limit. Given the situation, the population in Vietnam is locally important but the category Least Concern (LC) (IUCN 2012[2], Ban et al. 2007[3]) would be appropriate for this species.
Taxon Treatment
- Binh, H; Ngoc, N; Bon, T; Tagane, S; Suyama, Y; Yahara, T; 2018: A new species and two new records of Quercus (Fagaceae) from northern Vietnam PhytoKeys, (92): 1-15. doi
Images
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Other References
- ↑ IUCN (2017) The IUCN Red List of Threatened Species. Version 2017-2. http://www.iucnredlist.org [Downloaded on 10 December 2017]
- ↑ IUCN (2012) IUCN Red List Categories and Criteria: Version 3.1. Second edition. Gland, Switzerland and Cambridge, UK. http://jr.iucnredlist.org/documents/redlist_cats_crit_en.pdf [accessed 10 December 2017]
- ↑ Ban N, Ly D, Tap N, Dung V, Thin N, Tien V, Khoi K (2007) Vietnam Red Data Book Part II. Plants. Natural Sciences and Technology Publishers, Hanoi. [In Vietnamese]
