The FRLHT (
http://www.frlht.org.in) site is a good help in finding English or Latin equivalents to Indic plants. It
says Sanjivani would be
Cressa cretica (CONVOLVULACEAE). The image is very blurred.
A quick search brings up
Rudandi, a small shrub. Google Images tells the
same story. This, however, was a small tree 2-3 meters high.
The word
sanjivani itself means "endowed with life" or "fullness of life", ie. a revitalizer, depending how you interpret the
san- prefix. This could conceivably be applied to a vast array of potent medicinal plants.