Specimen of bark used in ordeal poison, erythrophleum guineense or sasswood bark, Nyasaland, East African, collected 1900-1930 Specimen of bark used in ordeal poison 1900-1930
Single strip of rolled bark, Cinchona Succirubra (Pav.), probably collected by R. Spence, grown Chimborazo, Ecuador, 1840-1861 Single strip of rolled bark 1840-1861
Specimen of chinchona bark, Cinchona nitida (Bth.) from Cundinamarca, Columbia, collected by M. T. Dawe. Section of chinchona bark