Exactly that, is there such a thing as cauciscan pine, we have been asked to
find the botanical names,

Corsican pine is Pinus nigra ssp. laricio.
There is also a Caucasian pine, Pinus kochiana.
You will need to find out where this tree came from to get more definite
information.
Not to be flippant, but doesn't your ISP have a search engine for the Web? On
AOL, it took me two minutes to find the above names.
Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)