(Lamiaceae) Vitex quinata (Lour.) F.N.Williams

Local name(s): ກົກ ຂີ້ ເຫງັນ (kok khee ngen)

Medicinal Use(s): Treatment of jaundice

Part(s) used: stem bark

Field characters: Tree 6 m tall, trunk dbh 45 cm, bark gray, irregularly fissured and cracked, slash pale brown, flower buds gray-green, open flowers with pink labellum and yellow lateral petals.

Locality: Xieng Khouang Province, Kham District, Kham Medicinal Biodiversity Preserve, 15 km from Kham town. Ba Tha village.

Habitat: Broadleaved evergreen submontane forest. Edge of forest along stream.

Altitude: 1130 m asl

Collector(s): D.D. Soejarto, K. Sydara, M. Xayvue

Collection number(s): DDS 14989

Collection Date: May 17, 2014 

Additional data:  

Voucher specimen is in deposit at the Field Museum (F) Herbarium, Chicago, USA under accession no. 2322898.

Synonyms, images, taxonomic description: 

Plants of the World online Flora of China Vol. 17 Page 29Global Biodiversity Information Facility 

Useful references: 

Deng, Y. Bioactive Constituents of Two Medicinal Plants from Indonesia. Ph. D. Dissertation, Graduate School of The Ohio State University, 2010; 241 pages. 
Deng Y, Chin YW, Chai HB, et al. Phytochemical and Bioactivity Studies on Constituents of the Leaves of Vitex Quinata. Phytochem Lett 2011,4(3):213-217. doi: 10.1016/j.phytol.2011.03.007. 
Li YP, Wang M, Wu S.. Chemical constituents of leaves of Vitex quinata . Chem Nat Compd 2010, 46: 462-463. https://doi.org/10.1007/s10600-010-9645-y 
Ramesh, S. & Reddi, V.R. Preliminary Phytochemical Screening and Antimicrobial Studies on Vitex Quinata (Lour) F.n. Williams (Verbenaceae) From Andhra Pradesh. Indian J. Appl. Res. 2011; 3(12):60-61. 
Rani, A. & Sharma, A. The genus Vitex: A review. Pharmacogn Rev. 2013; 7(14):188–198. Shreedhar, V. et al. In vitro antioxidant activity and free radical scavenging potential of roots of Vitex quinata.  Int. J. Chem. Sci. 2011; 9(1):139-148.