Varietal Studies of Flue-Cured, Burley and Dark Tobaccos (Classic Reprint)

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Excerpt from Varietal Studies of Flue-Cured, Burley and Dark TobaccosSince the generic revision of Nicotiana by Comes, who in 1899 described forty-one species, some thirty additional species have also been described. It is doubtful, however, if any of the great herbaria in the world today contain specimens of over one-half of these described species. With such a condition existing, considerable difficulty is encountered when an attempt is made to deter mine many of these species. This is chie¿y due to two reasons: (1) several species have been collected but once, (2) many of the original descriptions are indefinite and contain no figures or data, making identification difficult.Owing to its commercial importance Nicotiana tabacum, of which numerous varieties exist, is the most extensively grown species. Distinctive differences include variations in flower colour from various shades of red, through pink, to white, ¿ower size and shape, teratological mutations in pistil, stamens, corolla and calyx, shape, texture and number of leaves, habit of growth and probable resistance to disease. With such inter-relationships and inter-gradations of characteristics ranging from one extreme to the other, it is exceedingly difficult to readily differentiate the many varieties and forms. Many authors have tried to refer existing varieties to from four to six typical forms. The chief objection to this as a permanent guide is found in the fact that all varieties cross freely and in consequence little may. Be gained by such efforts.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.