Citrosma oligandra, Jul. (Siparuna obovata, A. DC.) is a tree of the family Monimiaceae. Because of its disagreeable odor it is known in Brazil as Negra mina, Catinga de negra or Catingueira. The leaves, which have a goat-like odor yield 0,54 p.c. of oil upon distillation. It is light yellow in color with a greenish fluorescence and its odor recalls distantly that of bergamot. Sp.gr. 0,8991).