]> A barcode-00238927 China Xizang (Tibet) Along road (highway 318) between Zhuka on the Lancang Jiang (Mekong River-"Zachu" in Tibetan) and Zogang. Rheum palmatum Linnaeus Linnaeus 2010-08-16 16:37:34 D. E. Boufford, J. H. Chen, S. L. Kelley, J. Li, R. H. Ree, H. Sun, J. P. Yue & Y. H. Zhang