Soap Nut or Wash Walnut
Ritha (Sapindus mukorossi) with its large leaves, is a handsome deciduous tree found in India. This tree belongs to the main plant order Sapindaceae and family Sapindeae. The species is widely grown in upper reaches of the Indo-Gangetic plains, Shivaliks and sub-Himalayan tracts at altitudes from 200m to 1500m.  Also known as soap-nut tree, it is one of the most important trees of tropical and sub-tropical regions of Asia. It is also called doadni, doda and dodan in Indian dialects.More...

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