Coto Bark. -- Bolivia. May be from Dri-mys Win'teri var. grana-ten'sis. In flat or curved pieces 12 Mm. (1/2') thick, cinnamon color and odor, taste pungent, bitter; contains cotoin, CHO, hydrocotoin, protocotoin, volatile oil, resin.  Dose, gr. 1-5 (.06-.3 Gm.); cotoin, gr 3/4-2 (.05-.13 Gm.).