Seeks to discover all of the plants growing within the Subanen environment are considered useful to the urbanized people and to find out how the said plants have affected Subanen life and culture: covers only those Subanen living in the province of Zamboanga del Sur: Lapuyan, Dumalinao, Lakewood and San Miguel District of Lumbia. Covers only the vascular plants whether indigenous/introduced which are found within their localities are considered useful for them.