The aerial portion of Justicia betonica L. was collected from
Kalasin Province, Thailand, in November, 2002, and
identified by Mr. Bamrung Tavinchiua of the Department
of Pharmaceutical Botany and Pharmacognosy, Faculty of
Pharmaceutical Sciences, Khon Kaen University, Thailand.
A voucher sample (KKU-0045) is kept in the Herbarium of
the Faculty of Pharmaceutical Sciences, Khon Kaen
University, Thailand.