The Mutations in the Lamarckiana-Family. 245 



In 1898 there arose in another 0. /a/a-family a single 

 example of 0. scintillans which flowered in its first year 

 and was self-fertilized in a bag. 148 young plants were 

 raised from its seeds, as follows : 



55 % O. Lamarckiana 

 Z7 % 0. scintillans 

 7 % O. oblong a 

 1 % O. lata. 

 I have tested the hereditary capacity of three exam- 

 ples of 0. scintillans which arose directly from the 0. 

 Lamar ckiana-i2im\\y. The first was a plant which arose 

 in 1895 but did not flower till 1896; it had a number of 

 lateral stems on all of which the flowers were fertilized. 

 The various sowings of their seeds gave the following 

 species and proportions : 



52-59 % O. Lamarckiana 

 34-36 % O. scintillans 

 3-10 % 0. oblonga 

 1 % O. lata. 

 I manas:ed to obtain self-fertilized seeds from nu- 

 merous O. scintillans which appeared in this culture ; the 

 proportions of the various kinds produced by them were 

 subject to considerable fluctuation, but they were essen- 

 tially the same as those given by their parents. 



Of the six plants which, as shown in the table on page 

 224, arose (1896) in the fifth generation of 0. La- 

 marckiana I only succeeded in bringing two through the 

 winter and in getting them to flower (1897). They were 

 self-fertilized in bags. The seeds of one plant gave like 

 the others : 



51 % 0. Lamarckiana 

 39 % O. scintillans 

 8 % O. oblonga 



