For my Birds, Butterflies, Trees, Lanscape pictures etc., visit http://commons.wikimedia.org/wiki/Special:Contributions/J.M.Garg
Dear Garg ji,
My observations and experiences
तमाल पत्रं राजेंद्र भजमाज्ञानदायक
Donot consume Tamala Patra i.e. Tobacco, as it destroys your knowledge.
In Ayurveda literatures it is mentioned that Tamala tree is present in Yamuna and Tapti river belt. Leaves are like Shisham and fruits are like Karonda. Branches are black. Many poets have compared this blackness with color of Shri Krishna. For instance
हेमलता 'तमाल' अवलंवित, सीस
मल्लिका फूली हो।
कुंचित केस बीच अरुझाने, जनु अलिमाला भूलि हो।। (परमानंद दास)
तरनि-तनया तीर मरकत मनि, जु श्याम 'तमाल'।
ब्रज की नारि-समूह मंडल बनी कंचन माल।। (चतुर्भुजदास)
In many books Chandan Tilak is also mentioned as Tamal.
As far as Garcinia xanthochymus is concerned it is present in good number in different locations throughout India. Here is detail about it.
I have much to share specially on Tamal of different medicinal properties and uses but I am not sure about safety of information provided through this group. We are not sure whether someone is gathering this information for commercial use or research or just for interest. Tamal like plants are very important for treatment of modern diseases. Hence we must be very careful. Few months back researchers asked for Noni (Morinda citrifolia) distribution in Central India. I furnished information. Few days back natives informed that Noni companies are inquiring about spots from same reference.