From each plot plant specimens for further herbarium identification were collected. The entire specimen collection has been left with botanist Vu Van Can in Hanoi. All specimens were conserved in alcohol before drying and identification. Some specimens were identified in the field, others later in Hanoi. Genus and species names follow the nomenclature used in Iconographia Cormophytorum Sinicorum (Chinese Academy of Science, Institute of Plant Research 1972– 1976), Cây cỏ Việt Nam (Pham Hoang Ho 1993), Vietnam Forest Trees (Forest Inventory and Planning Institute 1996), Yunnan Kexue Chubanshe (Yunnan Shumu Tuzhi 1990) and the International Plant Names Index database.
