Seeds of leguminous species usually show dormanvy caused by impermeability of tegument. The objective of this work was to evaluate the germinative process in Senna macranthera. Seeds were submited to different treatments of scarification and storage. lmmersion in concentrated sulfuric acid during 5, 10 and 15 minutes; immertion in boiling water for 5, 10 and 15 minutes and mechanical scaritication were the treatments used to break the tegument barrier of seeds stored for 1 and 2 years or freshly-harvested seeds. Results showed that the mechanical scaritication and the immertion in sulfuric acid had broken the tegumentar dormancy, improving the germination ratio, while treatments with boiling water were not efticient. The storage had a positive effect when associated to pregerminative treatments.