178 



OENOTHERA LAMARCKIANA MUT. VELUTINA. 



from Lamarckiana, of the type of the hybrid form subrobusta of 

 that book; and 0. deserens is a mutant from 0. rubrinervis, originated 

 through the loss of the typical red color, but without change in 

 the brittleness of the stem. These new mutants will have to be dealt 

 with in another article. 



Table II 



The most interesting question in this situation, however, is that 

 concerning the seeds of the first generation of the crosses between 

 0. Lamarckiana and 0. blandina. I made the crosses in 1914, culti- 



Table III 



vated the hybrids in 1915, and tried their self-fertilized seeds during 

 the winter. From each of the 3 crosses I had 5 vigorous specimens 

 of the laeta type, and an equal number of the velutina type. I shall 

 deal with the laeta first (table IV). 



Table IV 

 Self-fertilized seeds of laeta specimens of the first generations 



The 3 crosses may be taken as instances of one type and combined 

 on this ground. We see that a splitting occurs, 1 1 individuals having 

 the high percentages of the one parent, and 4 others having the low 



