334 BOTANICAL GAZETTE [NOVEMBER 
noted which showed red color. After most of the data were 
taken it was realized that the number of specimens lacking red 
color, but growing in the same situations, was needed for com- 
parison, especially for determining what per cent. of our flora 
showed red color and what situations produced the greatest pro- 
portion of cases. Last summer a record was kept of the number 
of plants found on Squirrel island, Maine, an island two or 
three miles in circumference. The total number was 126, of 
which 102 showed red color ; 24 showed none at that time, 5 of 
them being evergreens. Most of these 24 plants were recorded 
red at other times in other places. These figures, though true 
for a very limited region, give evidence that red color is more 
widely prevalent than would be supposed. 
The data taken gave the name of the place, situation in 
which the plant was gathered, whether roadside or woods, 
whether wet or dry, the amount of shade, height of the plant, part 
colored, the date, and, as far as was ascertainable by microscopic 
examination, in what tissues the red color was located. The 
fact should be emphasized that the date at which the plant was 
gathered made a decided difference in the color. Owing to the 
length of the records taken only the results are given here. 
In analyzing the results, attempt has been made to think of 
every possible interpretation of the presence of the color, 
and to ascertain by percentage how many specimens confirm 
each. ; 
The first records consider the part of the plant in which the 
red occurs. Of 285 plants showing red, the stem has 211 cases 
(73.3 per cent.), the petiole 140 (49.1 per cent.), the leaf 
(mesophyll) 99 (35 per cent. of which 7 per cent. were young 
leaves), and the veins 66 (23 per cent.). Red color, therefore, 
is More common in stems than in leaves. 
In upright stems more red, or red only, was shown evenly 
distributed in 138 cases (65.4 per cent.), near the ground in 31 
(14.7 per cent.), at the nodes in 23 (10.9 per cent.), at the tip 
in 3 (1.4 per cent.). Red color, therefore, is not commonly 
localized, but evenly distributed. Cases where more red was 
