''Nicotiana longiflora'', the longflower tobacco or long-flowered tobacco, is a species of

tobacco Tobacco is the common name of several plants in the genus '' Nicotiana'' of the family Solanaceae, and the general term for any product prepared from the cured leaves of these plants. More than 70 species of tobacco are known, but the ...

native to

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the sout ...

that is sometimes cultivated for its tubular

flower A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Angiospermae). The biological function of a flower is to facilitate reproduction, usually by providing a mechani ...

s that emit a very sweet odour at night. This plant has been a significant source of disease resistance in flue-cured and

burley tobacco Burley tobacco is a light air-cured tobacco used primarily for cigarette production. In the United States it is produced in an eight-state belt with approximately 70% produced in Kentucky. Tennessee produces approximately 20%, with smaller amoun ...

. Some of the disease impacted by resistance from this species are:

black shank ''Phytophthora nicotianae'' or black shank is an oomycete belonging to the order Peronosprales and family Peronosporaceae. Hosts and symptoms ''Phytophthora nicotianae'' has a broad host range comprising 255 genera from 90 families. Hosts incl ...

, cyst nematode,

root-knot nematode Root-knot nematodes are plant-parasitic nematodes from the genus ''Meloidogyne''. They exist in soil in areas with hot climates or short winters. About 2000 plants worldwide are susceptible to infection by root-knot nematodes and they cause appr ...

, and wildfire. The resistance form ''N. longiflora'' imparts near immunity to race 0 black shank, but no resistance to race 1. One of the varieties still in use today is 14 x L8, the second most popular

variety in the

U.S. The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...

References

longiflora Tobacco Taxa named by Antonio José Cavanilles {{Solanales-stub