Mangrove forests are forests that grow in tidal areas with high tolerance to salt content, widely distributed in tropical and subtropical regions. Mengkapan Village, Sungai Apit District, Siak Regency, Riau Province is one of the distribution of mangrove forest in Riau Province. This study aims to determine the morphological characteristics of mangrove species in Mengkapan Village, Sungai Apit…