Many thanks to everyone who replied.
I wanted to know the difference between the two species and this could be found in eflora of Pak. :
| 2 (1) | Leaves up to 30 cm long; leaflets elliptic-lanceolate, acute. Petals without scales | | Sapindus trifoliatus |
| + | Leaves up to 17 cm long; leaflets elliptic- ovate, obtuse or emarginate. Petals with 2 woolly scales | | Sapindus emarginatus |
So based on the leaves this is definitely S. emarginatus, as Id-d by Santhan-ji and Kasim-ji. Thanks to Vijigiri-ji for the pointer.
Although I have often seen Soapnut, ( Ritha), had never seen the tree, so this ID is all the more valuable. Sadly, the habitat, off the Chingleput, road is fast being lost to "development".
Thanks and regards
ASinha