Rodgersia aesculifolia Batalin Saxifraginaceae Chestnut-leaved Rodgersia. Herbaceous perennial. Distribution: Northern China. Named for Rear Admiral John Rodgers (1812-1882), American naval officer who commanded the Pacific expedition 1852-1856 when the genus was first discovered. Used as a Traditional Chinese Medicine for rheumatism, bronchitis, dysentery, asthma, and gastritis. Photographed in the Medicinal Garden of the Royal College of Physicians, London.