Naming Di Yu (Radix Sanguisorbae)——Shen Nong Ben Cao Jing (Shen Nong’s Herbal) Di Yu 地榆 Garden Burnet Root The Processing of Radix Sanguisorbae Origin The root of perennial herb Sanguisorba officinalis L. or root of S. officinalis L. var. longifolia ( Bert. ) Yu. et Li. of fami...