List of Nicotiana species explained

Accepted species of Nicotiana include;^[1]

Nicotiana acaulis Speg.
Nicotiana acuminata (Graham) Hook. - manyflower tobacco^[2]
Nicotiana africana Merxm.
Nicotiana alata Link & Otto - jasmine tobacco, sweet tobacco, winged tobacco, Persian tobacco, tanbaku (Persian)
Nicotiana ameghinoi Speg.
Nicotiana amplexicaulis N. T. Burb.
Nicotiana arentsii Goodsp.
Nicotiana attenuata Torrey ex S. Watson - coyote tobacco
Nicotiana azambujae L. B. Smith & Downs
Nicotiana benavidesii Goodsp.
Nicotiana benthamiana Domin - benth, benthi
Nicotiana bonariensis Lehm.
Nicotiana burbidgeae Symon
Nicotiana cavicola N. T. Burb.
Nicotiana clevelandii A. Gray - Cleveland's tobacco
Nicotiana cordifolia Phil.
Nicotiana corymbosa J. Rémy
Nicotiana cutleri D'Arcy
Nicotiana excelsior (J. M. Black) J. M. Black
Nicotiana forgetiana Hemsl.
Nicotiana forsteri Roem. & Schult. (previously designated N. debneyi)
Nicotiana fragrans Hooker
Nicotiana glauca Graham - tree tobacco, Brazilian tree tobacco, shrub tobacco, wild tobacco, tobacco plant, tobacco bush, tobacco tree, mustard tree
Nicotiana glutinosa L.
Nicotiana goodspeedii H.-M. Wheeler
Nicotiana gossei Domin
Nicotiana hesperis N. T. Burb.
Nicotiana heterantha Kenneally & Symon
Nicotiana ingulba J. M. Black
Nicotiana kawakamii Y. Ohashi
Nicotiana knightiana Goodsp.
Nicotiana langsdorffii Weinm. - Langsdorff's tobacco
Nicotiana linearis Phil.
Nicotiana longibracteata Phil.
Nicotiana longiflora Cav. - longflower tobacco, long-flowered tobacco
Nicotiana maritima H.-M. Wheeler
Nicotiana megalosiphon Van Huerck & Müll. Arg.
Nicotiana miersii J. Rémy
Nicotiana mutabilis Stehmann & Samir
Nicotiana nesophila I. M. Johnston
Nicotiana noctiflora Hook.
Nicotiana nudicaulis S. Watson
Nicotiana occidentalis H.-M. Wheeler - native tobacco
Nicotiana obtusifolia M. Martens & Galeotti (previously designated N. trigonophylla) - desert tobacco, punche, "tabaquillo"
Nicotiana otophora Griseb.
Nicotiana paa Mart. Crov.
Nicotiana palmeri A. Gray
Nicotiana paniculata L. - small-flowered tobacco
Nicotiana pauciflora J. Rémy
Nicotiana petuniodes (Griseb.) Millán.
Nicotiana plumbaginifolia Viv. - Tex-Mex tobacco
Nicotiana quadrivalvis Pursh (replaces the following older classifications: N. multivalvis Lindl., N. plumbaginifolia Viv. var. bigelovii Torrey, N. bigelovii (Torrey) S. Watson) - Indian tobacco
Nicotiana raimondii J. F. Macbr.
Nicotiana repanda Willd. - fiddleleaf tobacco
Nicotiana rotundifolia Lindl.
Nicotiana rustica L. - Aztec tobacco, strong tobacco, mapacho
Nicotiana setchellii Goodsp.
Nicotiana simulans N. T. Burb.
Nicotiana solanifolia Walp.
Nicotiana spegazzinii Millán
Nicotiana stenocarpa H.-M. Wheeler
Nicotiana stocktonii Brandegee
Nicotiana suaveolens Lehm. - Australian tobacco
Nicotiana sylvestris Speg. & Comes - woodland tobacco, flowering tobacco, South American tobacco
Nicotiana tabacum L. - common tobacco, domesticated tobacco, cultivated tobacco, commercial tobacco (grown for the production of cigars, cigarillos, cigarettes, chewing tobacco, dipping tobacco, snuff, snus, etc.)
Nicotiana thrysiflora Bitter ex Goodsp.
Nicotiana tomentosa Ruiz & Pav.
Nicotiana tomentosiformis Goodsp.
Nicotiana truncata D. E. Symon
Nicotiana umbratica N. T. Burb.
Nicotiana undulata Ruiz & Pav.
Nicotiana velutina H.-M. Wheeler
Nicotiana wigandioides Koch & Fintelm.
Nicotiana wuttkei Clarkson & Symon

Additional species listed by APNI are:

Nicotiana gascoynica M.W. Chase & Christenh.
Nicotiana hoskingii M.W. Chase, Palsson & Christenh.
Nicotiana insecticida M.W. Chase & Christenh.
Nicotiana karijini M.W. Chase & Christenh.
Nicotiana yandinga M.W. Chase & christenh.

Notes and References

http://www.theplantlist.org/tpl1.1/search?q=Nicotiana The Plant List
Knapp et al. (2004) Nomenclatural changes and a new sectional classification in Nicotiana (Solanaceae) Taxon. 53(1):73-82.