Nicotiana tabacum, L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1972, Flora Europaea. Volume 3. Diapensiacea to Myoporaceae, Cambridge: Cambridge University Press : 201

3. N. tabacum L. , Sp. Pl. 180 (1753)

( N. latissima Miller ).

Viscid annual or short-lived perennial 1-3 m. Leaves up to 50 cm or more, ovate to elliptical or lanceolate, acuminate, decurrent, sessile or with a short, winged petiole. Flowers numerous in a much-branched panicle. Calyx 12-20(-25) mm, tubular to tubular-campanulate; teeth triangular, acuminate, unequal. Corolla (30-)35-55 mm, infundibuliform, pale greenish-cream, often pinkish distally; limb 10-15 mm, with acuminate lobes, sometimes subentire. Stamens unequal, 4 sometimes slightly exserted, inserted in basal of corolla-tube. Capsule 15-20 mm, ellipsoid to globose. Cultivated for tobacco throughout most of Europe except the north, and often naturalized. [Al Au Az Be?B1 Bu Co Cr Cz Da Ga Ge Gr He Ho Hs Hu It Ju Lu Rm Rs (C, W, K, E)?Sa?Si Tu.] (? N.E. Argentina, Bolivia.)

A very polymorphic species containing a multitude of cultivated forms used in most modern tobaccos. No satisfactory formal infraspecific classification can be applied here.