]> A barcode-00459491 China Yunnan Longyang District. Along the W side of the Lancang Jiang (Mekong River) upstream from Yangbao Bridge on route G320; site of government-closed gold mining operation Persicaria longiseta (Bruijn) Kitagawa (Bruijn) Kitagawa 2021-12-16 09:17:09 D. E. Boufford, Jianling Guo & Lin Su