Recent field inventory of vascular flora on both bank of the Asamagbe stream, within the Forestry Research Institute of Nigeria Premises was conducted. The vegetation consists of 159 species within 151 genera and 66 families. About 40 species, including 15 cultivated plants or 25% of the flora are non-native taxa. Most of the recorded non-native species are naturalized aliens rather than casuals. Flagship species which serves as markers of the plant community identified include Christella dentata (Forsk) Holttum; Cleistopholis patens (Benth) Engl & Dalz, Bambusa vulgaris Schrade ex Wendel; Parkia bicolor A. Chev and Sparganophorus sparganophora (Linn.) C. Jeffery. The vegetation contains rich flora diversity with a need for its continual conservation to safeguard the enormous genepool