ArticleAuthors: Phan, Minh Giang; Truong, Thi To Chinh; Tong, Son Phan; Matsunami, Katsuyoshi; Otsuka, Hideaki (2010)
Recently the Betulaceae family was divided into two families: Betulaceae with Betula and Alnus genera and Corylaceae
with Corylus and Carpinus. Alnus is a genus of flowering plants which comprises about 30 species of deciduous trees and
shrubs, few reaching large size, mainly distributed throughout the northern hemisphere (Daniere et al., 1991). There are two
Betulaceae plant species recorded in the Flora of Vietnam Alnus nepalensis D. Don and Betula alnoides Buch. -Ham. (Pham,
1993). A. nepalensis D. Don (Betulaceae) (Vietnamese name: Tống quán sủi) is a woody plant that reaches up to 10–15 m in
height. In the Chinese traditional medicine A. nepalensis is used to treat diarrhoea... 
![Biochemical Systematics and Ecology Volume 38 issue 5 2010 [doi 10.1016%2Fj.bse.2010.09.020] Minh Giang Phan; Thi To Chinh Truong; Tong Son Phan; Katsuyoshi -- Mangiferonic acid, 22-hydroxyhopan-3-one.pdf.jpg](/retrieve/41fbbd95-63e7-4924-afeb-4da397d4a511/Biochemical%20Systematics%20and%20Ecology%20Volume%2038%20issue%205%202010%20%5bdoi%2010.1016%252Fj.bse.2010.09.020%5d%20Minh%20Giang%20Phan%3b%20Thi%20To%20Chinh%20Truong%3b%20Tong%20Son%20Phan%3b%20Katsuyoshi%20--%20Mangiferonic%20acid%2c%2022-hydroxyhopan-3-one.pdf.jpg)