Toob, I disagree. Most likely the white bloom seen in aged tobacco is of a lignocellulose nature with carbohydrates and sugars tagging along after the pressure of making the plug and then cutting is released. There are probably many products of lysed cells migrating to the surface of the cut tobacco flake surface and oils (eugenol, guaicol, phenolics, methulfurfural, fatty acids, etc) may be a part of the bloom but not the majority. The primary oils do not express themselves as a white bloom that I know of. I worked with lignocellulose for Georgia-Pacific and it does express itself in such a manner with pressure treated wood. You can see it any pressure treated product that is not post-acidified (washed). But I may be confusing all of this because it has been a very long time (3 decades) since I worked as a GP chemist well before going back to grad school so that I could become unemployed. :/
Ash got the flake ID correct. It is stonehaven.