This is what I have written about and around this variant: TW: 137 goes under the family name Nicotiana Sylvesteris (Woodland) men are actually a crossing between N.Tabacum and N.Sylvestris.N.Tabacum derives from N.Sylvestris and the tissues are striking alike. Men by crossing N.Sylvestris with N.Tabacum have obtained TW: 137. Therefore, this variant is more similar to N.Tabacum than many other N.Sylvesteris variants. -Then look at the measurement results found in US GRIN-ARS You can see that dried leaves from the plant really do not contain anything remarkable. However, some things may be a bit (unusually high).