. The Encyclopaedia Britannica; ... A dictionary of arts, sciences and general literature . the Virginian Tobacco, N. Tabacum,while the best known representative of the second is the GreenTobacco, N. ruslka. These two species, together with theirnumerous varieties, and with the Persian Tobacco, A, pcrsica,—thesource of the famous Tumbeki or Shiraz tobacco,—are the solesources of commercial tobacco. N. Tabacum is the species fromwhich the tobaccos of Cuba, the United States, and the PhilippineIslands, and the Latakia of Turkey, are derived, and it is thusthe source of not only the greater propo


. The Encyclopaedia Britannica; ... A dictionary of arts, sciences and general literature . the Virginian Tobacco, N. Tabacum,while the best known representative of the second is the GreenTobacco, N. ruslka. These two species, together with theirnumerous varieties, and with the Persian Tobacco, A, pcrsica,—thesource of the famous Tumbeki or Shiraz tobacco,—are the solesources of commercial tobacco. N. Tabacum is the species fromwhich the tobaccos of Cuba, the United States, and the PhilippineIslands, and the Latakia of Turkey, are derived, and it is thusthe source of not only the greater proporrion of the tobacco ofcommerce but also the most highly prized and valuable of ttavarieties. jV. rustiea, originally a native of Brazil, is cultivated 424 TOBACCO to a considerable extent in South Germany, Hangary, and the EastIndies, The Virginian tobacco-plamt, N. Tabacum, is a coarse rank-growing annual, with a simple unbranched cylindrical stem whichattains a height of 6 feet and upwards, terminating in a panicleof pink flowers. It has alternate simple oblong lanceolate leaves,. Fio. 1.—Flowering Top of ]f. Tabacum. those at the lower part of the stem being slightly stalked, and oflarge size, reaching to two feet in length, while the upper are semi-amplcxicaul and of variable outline. The seeds are brown in colour,with a rongh surface, of minute size, and exceedingly numerous, asmany as 40,000 having been counted on a sing\e plant. The wholeof the green parts of the plant are covered with long soft hairswhich exude a viscid juice, giving the surface a moist glutinousfeeling. The hairs are multicellular, and of two kinds, onebranching and ending in a fine point, while the other, unbranched,terminates in a clump of small cells. Stomata occur on bothsurfaces of the leaves, and, with the peculiar hair structure, renderthe microscopic appearance of the plant highly characteristic.


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