Summary
The germination of twelve forest species from the Manaus region were investigated with the object of obtaining information for the cultivating of these species. Germination percentage curves in function of time were made showing the distinction between species with regard to the cultural value of these seeds as well as the germination percentage and period. Additional tests were realized (purity, cut, fluctuation and weight) giving a better characterization to the lots studied. The authors point out a good germinative potencial for these species, being that nine of them present a higher than fifty germination percentage without any type cf treatment during a maximum period of ninety days after sowing.