The present paper deals with the study of wetland plants in “Kapla beel” area of the Barpeta district of Assam (India). A total of 107 angiospermic plant species belonging to 80 genera, 37 families, and 21 orders are taken into consideration. Treatment of taxa according to the APG-IV system of classification reveals the existence of 4 ANA-grade species. The clade Magnoliids has been recorded with only a single species. The clade Commelinids is recorded with 50 species under 37 genera, 12 families and 5 orders. Asterids under the principal clade Eudicots and Superasterids respectively have been recorded with 31 species distributed under 27 genera, 13 families and 6 orders. Another major clade, viz. Rosids under the principal clade Eudicots and Superrosids respectively have been found with 8 species belonging to 6 genera, 5 families and 4 orders. Ranunculales and Proteales are recorded as the smallest group under Eudicots comprising only 1 species each. Caryophyllales have been recorded with 10 species belonging to 4 genera and 2 families. The habitat condition of the wetland has been found to favour the growth of marshy amphibious species in a large amount.