412 BOTANICAL GAZETTE [MAY 
The offspring of self-fertilized /utea consisted of this form and 
type R, but none of the other secondary types appeared among 
them. - Table X is made up in the same way as that for ovata. In 
one instance a third generation, derived from two successive genera- 
tions of Jutea, was also studied. 
TABLE X 
SECOND AND THIRD GENERATION OF /ufea CULTIVATED IN 1916 
Cross Generation lutea R Total 
O. grandiflora X Lamarckiana. .... 2 44 25 69, 
O. grandiflora Xnanella............. 2 33 12 45 
oO. gs: ndiflora Getecta X Lamarcki- 
Tree Oe eee ke eee 2 45 It 56 
O. padi ochracea Xnanella. . 2 33 15 48 
O. grandiflora Xnanella............. 3 28 51 79 
ee eee 183 114 207 
Pesctatnae Aes CR abs uae Pin Napa eae ad ge A een ees 
The percentage for R is 38 per cent, coinciding sufficiently with 
those in the two previous cases (24 per cent and 42 per cent). 
As shown in table VII, I have self-fertilized specimens of brunnea 
in 7 different cultures of the first generation. I cultivated 60-70 
offspring from each of them and studied them all during their whole 
lifetime until the first fruits began to ripen in August. One of them 
flowered in 1915, and one plant was fertilized so as to have a second 
generation of brunnea in 1916. It embraced 70 flowering plants. 
All these cultures were uniform; they produced no R and no others, 
and not even a Jorea in the beds derived from crosses of this mutant. 
The same table shows three self-fertilized specimens of contraria, 
the offspring of which was studied, in 60, 70, and 72 flowering 
individuals in 1916. In one case there were three doubtful speci- 
_ mens like type R, but apart from these the cultures were uniform 
and like their parents. 
We now come to the crosses of the mutant Jorea. The special | 
mark, consisting in the almost linear leaves, was latent in the first 
generation, but was seen to return in the second, whenever speci- 
mens of ovata or /utea are self-fertilized. The brunnea, however, 
did not split them off, as we have just seen. I made the following 
cultures (table XI) and counted them in the same way as previously 
