කොස්[Kos]/Jak(Artocarpus heterophyllus)

Common introduced tree with unknown origin (Possibly South India). Widely cultivated (And also naturalized) due to its edible fruits which ripe mainly during March-April months of the year. Wood used in construction industry and to make furniture. Leaves - fodder. Two forms occurs in Sri Lanka
1) වරකා[Waraka] - Has firm pulp in the ripe fruits.
2) වැල [Wala] - Soft pulp in the ripe fruits.