For Nicotiana
Barboza et al. 2016. In Kadereit, J.W., and V. Bittrich. 2016. The families and genera of flowering plants. XIV. Flowering plants – Eudicots – Aquifoliales, Boraginales, Bruniales, Dipsacales, Escalloniales, Garryales, Paracryphiales, Solanales (except Convolvulaceae), Icacinaceae, Metteniusaceae, Vahliaceae. Springer, Berlin. 412 pp.
Fernald, M.L. 1950. Gray's manual of botany, eighth (centennial) edition. Corrected printing, 1970. D. Van Nostrand Co., New York, N.Y.
Goodspeed, T. H. 1954. The genus Nicotiana: origins, relationships and evolution of its species in the light of their distribution, morphology and cytogenetics. Chronica Botanica Co., Waltham, Mass. 536 pp.
Knapp, S. 2023. Nicotiana. In Flora of North America Editorial Committee. 2023c. Flora of North America north of Mexico. Volume 14, Magnoliophyta: Gentianaceae to Hydroleaceae. Oxford Univ. Press, New York, NY. 505 pp.
Knapp, S., M.W. Chase, and J.J. Clarkson. 2004. Nomenclatural changes and a new sectional classification in Nicotiana (Solanaceae). Taxon 53: 73-82.
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