This research study was conducted in the sector "Pabloyacu" located in the district and province of Moyobamba, Department of San Martín Peru, aiming to evaluate the characteristics of trees from forest timber species predominant in the watershed of the creek Pabloyacu, as this will contribute to existing knowledge ofthe flora in the area. We identified 40 species were grouped into 25 botanical families. The family Moraceae (6 species) was the most named. lt is followed by Arecaceae (5 species), then there is the family Lauraceae (3 species), t hen the family Melastomataceae, Tiliaceae, Sapotaceae, Vochysiaceae with 2 spec ies each, and Anacardiaceae, Apocynaceae Araliaceae, Bignoniaceae, Boraginaceae, Burceraceae, Cecropiaceae, Euphorbiaceae Fabaceae, Flacourtiaceae, Malpighiaceae, Miliaceae, Myristicaceae, Olacaceae, Phyl lanthaceae, -Polygonaceae, Ulmaceae Urticaceae were represented ...