There are 6 Chinese Herbs starting with "R"
Ren Dong Teng Honeysuckle Stem Caulis Lonicerae Honeysuckle Stem 
Ren Shen Ginseng Root Radix Ginseng Ginseng Root 
Rou Cong Rong Fleshy Stem of the Broomrape Herba Cistanchis Deserticolae Fleshy Stem of the Broomrape 
Rou Dou Kou Nutmeg Seeds Semen Myristicae Fragrantis Nutmeg Seeds 
Rou Gui Inner Bark of Saigon Cinnamon Cortex Cinnamomi Cassiae Inner Bark of Saigon Cinnamon 
Ru Xiang Frankincense Resin Resina Olibani Frankincense Resin