344 Gates, 
Table I. 
O. rubrinervis, 1460 buds taken from 104 plants. 
o | I 2 3 4 | 5 | 6 | 7 8 
6 49 | 165 | 264 50 | 292 | 154 | 158 50 
(8) U) (I (104) (6) | 
Adding 50% of each intermediate to the two adjacent classes 
6 53 227 341 rat) N anes 50 
| | 
53 227 341 | 625 53 50 
Table 2. 
O. rubrinervis, 1.13. 31 buds. 
| o I | a Ree perp hte | 6 7 
Sept 28,) LOOM ee. | | keg x ‘ x 
| (2 3) | x x 
pe | | x 
| (2—3).4 | KA || 
| x x(4—5) 
|x. 4. y | 
| SA 355% x(4—6) 
RA > 
Oct ET ts 1007 amen Bed 5) | (Ge) | x 
(3—5) IRRE 2.6 
le 
Sum of buds in each class. . | 2 ANZ) Aen (2) ed 9 3 4 
Adding half of interme-| | | | 
diates to each adjacent | | | | | | 
Classics een eeare 12° 225: es eels 2) 
Adding together Classes 4, | | 
5 and 6 in which the | | | 
extent of the red is | | | 
thezsamesse ar rege 2 5 6 |), 145) | a! 
= more yellow than type. 
environmental conditions, or whether the lesser capacity for antho- 
cyanin production is associated with slower development, is uncertain. 
BITTER (1908) found that, in races of Xanthium, the more highly 
pigmented developed more rapidly, and a similar relation appears to 
hold for O. rubricalyx and O. rubrinervis although the difference is 
not very great. 
In making up the statistics of variation in the extent of the red 
color pattern in the mature buds of O. rudrinervis X is used to denote 
