1901 | DISTRIBUTION OF RED COLOR 339 
WET, SUNNY PLACES, 
| Stem. Petiole. Leaf-blade. | Veins, 
| ae 15 7 10 6 
e131) eee 10 8 3 I 
Oates Collenchyma..... 8 8 5 Sys I ; 4 4 . 
| Parenchyma...... 13 33 | 9 ae Ie 9] 8 8 a 
{ ee ac a ee 2415 3 ia of 5 fc) 
asc. Bundles . fe) 
prele ee RAN eeeronetre et aioe sie: - 
WET, SHADY PLACES. 
Stem. Petiole. Leaf-blade. Veins, 
| 6 4 7 oO 
PINS cio. scarad 2 ATs af : a) 
Cortex s Collenchyma ..... at.% 15 | .? | ° 9 te) 
P. chyma Se TO a4 ed ae a 7 4 ~ 
cl i)" (a) a te) 2 
Vasc. bundles..... I I 
— { tee 3 
DISAPPEARANCE OF COLOR IN 54 PLANTS. 
Stem. Petiole. Leaf-blade. Veins. 
gasses tO O REIT 3 7 22 6 
Hypodermis...... 7 5 3 2 
Cortex os eros 12 13 | 10 
enchyma..i <5 5 8 18 8 
Sel enchyma..... 
Stele { Vasc, bundles. 
PR oi aes eee 2 fe) e) ° 
In frequency of color epidermis exceeds hypodermis or par- 
enchyma in stem and leaf-blade, but in each case the cortex 
shows the largest number of cases. In dry sunny places the 
epidermis has most color, the color gradually disappearing in 
the stem from the outside in. In dry shady and wet shady 
places the parenchyma exceeds, in wet sunny places the hypo- 
dermis or epidermis. It seems then as if sunlight tends to 
increase the red color in the epidermis or hypodermis. In cases 
of disappearance of color, the loss is greatest in the epidermis 
