The Regional Adaptation of Corn in Nebraska 
33 
Table 13 . — Histological Leaf Measurements of Native Corn 
Types Grown in Various Regions of Nebraska. The Results 
for the Various Counties Are Here Expressed in Per Cent 
of the Results for Richardson County. 1915 , 1 
Where grown 
Thickness of 
Leaf 
Upper 
epi- 
dermis 
Lower 
epi- 
dermis 
Per cent of total leaf 
thickness of 
Upper 
epi- 
dermis 
Lower 
epi- 
dermis 
Total 
epi- 
dermis 
Number 
vascular 
bundles 
per cm. 
leaf width 
County 
(1) 
Richardson . . . . I 
Lancaster ! 
Thurston j 
Lincoln. . . 
Cherry. . . 
Dawes 
Kimball . , 
Microns 
(2) 
Microns 
(3) 
Microns 
( 4 ) 
Per cent 
( 5 ) 
EASTERN NEBRASKA 
100 ! 100 I 100 I 100 
94 | 97 i 91 1 102 
100 I 101 I 95 101 
CENTRAL NEBRASKA 
103 i 98 ! 96 95 
101 101 100 101 
WESTERN NEBRASKA 
102 ] 101 97 99 
96 ! 97 1 97 101 
Per cent 
Per cent 
(6) 
(7) 
(8) 
100 
100 
100 
97 
100 
107 
95 
99 
104 
| 93 
| 94 
94 
99 
100 
100 
; 95 
97 1 
98 
102 
101 
104 
Where 
grown 
Number of 
stomata per 
sq. m. m. 
Length 
of stoma 
Length of 
epidermal cell 
Width of 
epidermal cell 
Upper 
epi- 
dermis 
Lower 
epi- 
dermis 
Upper 
epi- 
dermis 
Lower 
epi- 
dermis 
Upper 
epi- 
dermis 
Lower 
epi- 
dermis 
Upper 
epi- 
dermis 
Lower 
epi- 
dermis 
County 
(1) 
(9) 
(10) 
Microns 
(11) 
Microns 
(12) 
Microns 
(13) 
Microns 
(14) 
Microns 
1 (15) 
Microns 
(16) 
Richardson . 
100 
! 100 1 
EASTERN NEBRASKA 
100 100 100 
100 
100 
100 
Lancaster. . 
98 
97 | 
103 
102 
111 
112 
99 
94 
Thurston . . . 
86 | 
! 92 i 
103 
104 
104 
111 
99 1 
97 
Lincoln . . . . ! 
105 ! 
111 | 
CENTRAL NEBRASKA 
102 ! 102 87 ' 
82 : 
101 
95 
Cherry 
108 ; 
106 i 
96 
96 
87 
98 
100 
89 
olawes 
106 
1 104 
WESTERN NEBRASKA 
89 ! 97 87 
1 91 
102 | 
96 
Kimball .... 
113 
115 
89 
90 
92 
97 
99 
92 
x Data calculated from Table 12. 
