(Euphorbiaceae) Trigonostemon sp.

Local name(s): ສ້ານ ນໍ້າ ຍອດ ແດງ (san nam yod deng) 

Medicinal use(s): blood tonic

Part(s) used: stem wood (without bark)

Field Characters: Small tree, branches liana-like, stem 8 cm in diameter, fruits profuse, green, turning black, disposed on a spreading, axillary, terminal panicles

Locality: Oudomxay, Muang Xay District, Donxay Village, Medicinal Biodiversity Preserve, about 3 km south of city. GPS reading: 20o 40.032’ N; 102o 00.133’ E.

Habitat: Broadleaved, mixed evergreen lowland tropical rainforest on a mountain slope. 

Altitude: 730 m asl. 

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

 Collection number(s): DDS 15073

Collection Date: September 25, 2014

Additional information:  

Voucher specimen is in deposit at the Field Museum (F) Herbarium, Chicago, USA under accession no. 2314141.

Synonyms, images, taxonomic description: 

(indented)Plants of the World online
GBIF | Global Biodiversity Information Facility

Useful references:


Song K, Li M, Yang Y, et al. Trigonostemon species in south China: Insights on its chemical constituents towards pharmacological applications. J Ethnopharmacol 2021,  5;281:114504. doi: 10.1016/j.jep.2021.114504. Epub 2021 Aug 6. PMID: 34371116.