Plant Material. The plant material of S. longa was
collected from Guangxi Province of People’s Republic of China
in the summer of 2002 and was identified by Prof. Su-Hua
Shi of the Institute of Botany, School of Life Sciences, Zhongshan
University. A voucher specimen was deposited in Shanghai
Institute of Materia Medica (accession number: SL-2002-
1Y).