''Quercus augustinii'' is a rare species of tree in the family
Fagaceae
The Fagaceae are a family of flowering plants that includes beeches, chestnuts and oaks, and comprises eight genera with about 927 species. Fagaceae in temperate regions are mostly deciduous, whereas in the tropics, many species occur as eve ...
and the "
ring-cupped oak" sub-genus. It has been found in
Vietnam
Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making it ...
as well as
Guangxi,
Guizhou
Guizhou (; formerly Kweichow) is a landlocked province in the southwest region of the People's Republic of China. Its capital and largest city is Guiyang, in the center of the province. Guizhou borders the autonomous region of Guangxi to t ...
, and
Yunnan
Yunnan , () is a landlocked province in the southwest of the People's Republic of China. The province spans approximately and has a population of 48.3 million (as of 2018). The capital of the province is Kunming. The province borders the ...
Provinces in southern China.
''Quercus augustinii'' is a tree up to 10 m. tall, with orange-brown twigs and leaves as much as 120 mm long. The
acorn
The acorn, or oaknut, is the nut of the oaks and their close relatives (genera '' Quercus'' and ''Lithocarpus'', in the family Fagaceae). It usually contains one seed (occasionally
two seeds), enclosed in a tough, leathery shell, and bo ...
is oblong-ovoid, 10-17 × 8-12 mm, glabrous, apex rounded or slightly depressed; scar approx. 6 mm in diameter.
Skan, Sidney Alfred in Forbes, Francis Blackwell & Hemsley, William Botting 1899. Journal of the Linnean Society, Botany 26(178): 507
description in Latin, commentary in English
References
External links
photo of herbarium specimen at Missouri Botanical Garden, collected in Yunnanline drawing, Flora of China Illustrations vol. 4, fig. 381, 7
augustinii
Flora of Vietnam
Flora of Indo-China
Trees of Vietnam
Flora of China
Plants described in 1899
{{Quercus-stub