1912] HASSELBRING—CUBAN TOBACCO 125 
No. 5: pl. X. fig. 16 
No. 5 is a Cuban type with unusually broad leaves, which are 
obtusish at the apex, and with the shank not so distinct as in the 
other types. The form tends toward the broad-leaved types. 
The flowers are white or very pale pink, with the limb of the corolla 
lobed as in the other Cuban types. The plants retained all their 
characteristics in Michigan. 
No. 32: pl. V. fig. 5; plhiX. fig. 32 
No. 32 is striking on account of its strict habit and peculiar deep 
bluish-green color. The leaves are of the narrow type, oblong to 
oblong-ovate, erect, forming an acute angle with the stem, and with 
the apex long-pointed and arching. The surface is marked with 
furrows and the pandurate base is much wrinkled. The flowers are 
deep pink to pale pink, with triangularly lobed limb. The strict 
habit and thick leaves of dark bluish-green color make these plants 
very conspicuous in the field. The characteristics of the plants 
were retained in Michigan. 
No.1: pl. V. fig. 6; pl. IX. fig. 13; pl. X. fig. 19 
All through the Cuban tobacco fields there occur narrow- 
leaved forms which resemble the ordinary Cuban types to some 
extent, at least while they stand intermingled with them. It is 
all the more difficult to separate these forms definitely because a 
number of gradations occur from very narrow leaves to much wider- 
leaved forms approaching the typical Cuban tobacco. These forms 
do not constitute a large percentage of the tobacco crop. They 
are sufficiently conspicuous, however, to have attracted the atten- 
tion of Cuban growers, who call such forms lengua de vaca or cow’s 
tongue. A number of such forms varying in width of leaves were 
selected, but seeds were obtained from only one form. The others 
failed to produce suckers. No. 1 is a conspicuously narrow- 
leaved form. The plants are of dwarf habit, having the large 
leaves low down on the stem, thus giving the upper part a naked 
appearance. The leaves vary from oblong-pointed to lanceolate- 
acuminate. The surface is wavy, being obliquely furrowed 
parallel to the veins. The base is narrow-pandurate with decurrent 
