72 TENOPYR: CONSTANCY OF CELL SHAPE 
cells in the constricted portions of the leaf are longer, rather 
than narrower, than the cells of the lobes, whereas in the 
leaf as a whole the difference is plainly one of greater breadth of the 
leaf in the lobed portion than in the constricted portion, the length 
TABLE VIII 
CICHORIUM INTYBUS, WITLOOF TYPE 
Maximum length and width of the leaves of a cultivated chicory and tageccan : 
dimensions of the cells of the lower epidermis in different regions of the dth 
of leaf from midrib to margin. B = average size of cells in mm. C = average Coke 
of cells in 1 millimeter. N seat in parentheses show the number of counts. 
Broadest part of blade 
Leaf siz Basal portion 
aes cates Near midrib Midway out Marginal 
from midrib 
Length | Width Length | Width | Length | Width | Length} Width Length | Width 
A 6. 45-. 
350 92| B (15) 0.062} 0.029) 0.032} 0.032] 0.038} 0.026] 0.027| 0.024 
C (15) | 16.01 | 33-98 | 30.35 | 30.87 26.15 37.18 | 35-82 | 40.5 
A ace 57. 
386) 105 B (15) 0.059! 0.027; 0.03 | 0.039] 0.032} 0.034 
C (15) | 20.04 | 36.59 | 32.43 | 25.5 | 30.98 | 20.34 
A by SE. 
352\ +02 .B (15) 0.055| 0.03 | 0.033) 0.033} 0.034) 0.033 
C (15) | 17-80. | 32.43 | 290.52 | 29.93 | 29.13 | 30.05 
A 6. 48. 
412| 104 SB (15) 0.053} 0.029} 0.036) 0.04 | 0.037| 0.036] 0.037| 0.037 
C (15) | 18.85 | 33.71 | 27-75 | 24-67 | 26.63 | 27.66 | 26.94 | 27-01 
A 8. 50. 
472 94 B (15) 0.066| 0.026) 0.032) 0.037} 0.031] 0.032 
C (15) | 14-95 | 37-17 | 30.65 | 26.42 | 31.29 | 30.69 
A 8. 49. 
425| 107 B (15) 0.062} 0.03 | 0.041, 0.034 0.033| 0.033} 0.029) 0.026 
C (15) | 15.92 | 32.42 | 24.06 | 28.58 | 30.04 | 29.43 | 33-5 | 37-68 
A 9. Si. 
350| 104 B (10) 0.041} 0.035 0.03 | 0.03 | 0.035! 0.036] 0.032! 0.031 
C (10) | 24.01 | 28.28 | 24.02 | 32.05 | 28.49 | 27.26 | 31.07 | 31.84 
Av.A 9.07 49-42 
Av. 404/Av. 99) Av.C (100), 0.055! 0.029 0.034) 0.035) 0.034! 0.032 
Av. 4 ti 17.95 | 33-76 | 28.62 | 28.19 a8 08 bee i 
Ratio dimensions of OO orci 7.885% 08 >t t.04:t 
of the two regions being the same, or even less in the constricted 
portion. The cell shape in the wild chicory leaf is practically the 
same both in the lobes and the constrictions of the leaf. 
