Stomata and Hydathodes in Campanula rotundifolia L. 63 
Table III. Data concerning the stomata of the Shade Shoot. 
Leaf position 
on shoot 
1 st = lowest 
15 th =highest 
Leaf area 
in sq. mm. 
Lower surface 
Upper surface 
Av. no. of 
stomata per 
sq. mm. 
for both 
surfaces 
No. of 
stomata 
Av. no. 
per sq. mm. 
No. of 
stomata 
Av. no. 
per sq. mm. 
d 
risth 
31-2 
3,600 
11538 
947 
30*35 
72*86 
0 J 
14 th 
42-44 
5,000 
117*92 
1,926 
24*2 
71*06 
1 1 
i 13 th 
37-o 
4*467 
120*72 
1,243 
33*6 
77*i6 
s 1 
w 
^-I2th 
4i-4 
3,920 
94*68 
1,129 
27*27 
60*47 
"nth 
42*5 
4,132 
97-22 
827 
19*46 
58*34 
10 th 
28-2 
2,409 
85*42 
682 
24*18 
54*8o 
9th 
26-8 
2,144 
8o-o 
569 
21*23 
50*61 
Td 
8th 
16*6 
T456 
87-7 
474 
28*55 
58*12 
B 
7th 
13-1 
900 
68 *7 
443 
33*8i 
51*25 
+» < 
6th 
10-4 
1,010 
97*ii 
558 
53*65 
75*38 
0 
5th 
12-0 
744 
62-0 
448 
48*17 
50*18 
4th 
17.9 
1,906 
112*12 
989 
58*18 
85*15 
3rd 
17-4 
T974 
113*44 
782 
44*94 
79*19 
2nd 
13-8 
1,660 
121*0 
333 
24*13 
72*56 
is t 
23*8 
2,400 
ioo-o 
574 
24*12 
62*06 
Total =| 
37*722 
11,024 
The few upper leaves are not included in the table, as many of the stomata 
were immature (see fig. i). 
Table IV. Data concerning the stomata of the Sun Shoot. 
r^Oth 
12-2 
i,4i4 
115*98 
1,125 
92*21 
104*0 
39th 
10*2 
944 
92*55 
948 
92*94 
92*74 
38 th 
4*4 
44i 
100*0 
448 
110*0 
105*0 
37th 
12-2 
1,044 
85-57 
967 
79*26 
82*41 
36th 
6*o 
568 
94-67 
480 
8o*o 
87*33 
35th 
11*0 
883 
80*27 
777 
70*64 
70*45 
34th 
12-0 
1,194 
99*5 
1,no 
92*5 
96*0 
33rd 
no 
1,045 
95*o 
802 
72*91 
83*95 
32nd 
12-8 
1,322 
103*28 
1,138 
88-9 
96*09 
U 
3ISt 
i3*o 
1,334 
102*61 
1,055 
81*15 
91*88 
0) J 
30th 
14*0 
^,270 
90*71 
1,213 
86*64 
88*67 
’ 'I 
29th 
12*3 
f ,332 
108*3 
1,078 
87*64 
97*97 
HH 
28 th 
4*5 
406 
9022 
333 
74*o 
82*0 
27th 
17*2 
i,55o 
90-11 
1,213 
70*52 
80*31 
26 th 
15*5 
1,822 
ni-i 
1,205 
77*74 
94*42 
25 th 
24*3 
2,509 
103*25 
1,626 
66*91 
85*08 
24 th 
25*2 
2,660 
105*55 
1,404 
55*7i 
80*63 
23rd 
29*0 
2,310 
79-65 
1,646 
56*74 
68-19 
22nd 
16-6 
1,279 
77*05 
911 
54*88 
65-96 
2 ISt 
21-4 
2,003 
93*6 
1,669 
78*0 
85-8 
20 th 
19*2 
2,153 
112*24 
T553 
79*84 
96-04 
ngth 
22*4 
2,059 
91*92 
1,680 
75*o 
83*46 
d 
r i8th 
33*3 
2,912 
86*46 
2,087 
62*67 
74*56 
I 17th 
25*6 
2,823 
110*27 
1,895 
74*02 
92*14 
| 16th 
26*0 
2,407 
92*58 
1,811 
69-65 
8i*ii 
& 
HH 
^ 15 th 
18*0 
2,050 
113*89 
1,320 
73*33 
93*6i 
Total = 
4T734 
3T5I4 
The fourteen lower leaves had fallen off (see fig. i). 
2 —10 
