أراك
The inland forest's flora is dominated by "Manilkara hexandra" (Sinhalese "palu"), "Hemicyclea sepieria", "Bauhinia racemosa", "Cassia fistula" ("ehela"), "Chloroxylon swietenia" ("burutha"), and "Salvadora persica" species. The dominant tree of the Kumana villu is "Sonneratia caseolaris", while "Typha angustifolia" is the dominant reed. "Terminalia arjuna" trees dominate the riverine forests along the Kumbukkan Oya. The common aquatic plants of the swamp are colourful "Ludwigia" spp., "Nelumbo nucifera", "Nymphaea pubescens", "Aponogeton" spp. and "Neptunia oleracea".