cinchonia

from The Collaborative International Dictionary of English v.0.48

Cinchonine \Cin"cho*nine\, n. [From {Cinchona}: cf. F.
   cinchonine.] (Chem.)
   One of the quinine group of alkaloids isomeric with and
   resembling cinchonidine; -- called also {cinchonia}.
   [1913 Webster]