FREWIA 
فالسہ ۔ ایک بہت ہی اہم اور صحت کے لیے مفید پھل ۔  
GREWIA -   
گريووا ۔ فالسہ   ( Note : فالسہ = Phalsa/Falsa )
other findings ,, 
Grewia Asiatica  : Drought-resistant Asiatic treelike shrub bearing pleasantly acid small red edible fruits commonly used in sherbets
--------------------------------------------------------------------
Wow... Andy, You posted a super informative link , Thanx buddy , you're good at web surfing and searching 

 .... you find the best link to settle down this issue about Falsa/phalsa ...  so , its safe for thals to take Falsa humm yummy .... Thanx alot buddy you saved Phalsa for thals ...
Tariq Bhai now you & me can say this " WOW YUMMY Phalsa :P 

 " .. 
Best Regards
Umair