Iris Cohen wrote:

Can someone please say what is the scientific name of the plant that
provides cream of tartar?

Cream of tartar, potassium bitartrate, is a byproduct of wine production. The
scientific name of the plant is Vitis vinifera, although some grape varieties
are hybrids with other grape species.

Another good thing to know is that Pasteur discovered the principle of
stereochemistry
as a result of his studies of tartaric acid for the wine industry. Search Google
for pasteur tartaric to find more details.