Cinchona pubescens , the Quinine Tree , is known for because its bark has a lot of quinine . It has similar uses to Cinchona officinalis in making quinine , used for treatment of malaria . Cinchona pubescens is known for its bark 's high quinine content - and has similar uses to Cinchona officinalis in the production of quinine , most famously used for treatment of malaria ( Kinyuy et al . 1993 ) .