266 Retrograde Varieties 



Constant hybrids have been raised by Mil- 

 lardet between several species of strawberries. 

 He combined the old cultivated forms with new 

 types from American localities. They ordi- 

 narily showed only the characteristics of one 

 of their parents and did not exhibit any new 

 combination of qualities, but they have come 

 true to this type in the second and later gener- 

 ations. 



In the genus Anemone, Janczewski obtained 

 the same results. Some characters of course 

 may split, but others remain constant, and 

 when only such are present, hybrid-races result 

 with new combinations of characters, which are 

 as constant as the best species of the same ge- 

 nus. The hybrids of Janczewski were quite fer- 

 tile, and he points out that there is no other 

 reason why they should not be considered as 

 good new species. If they were not produced 

 artificially, but found in the wild state, their 

 origin would have been unknown, and there can 

 be no doubt that they would have been described 

 by the best systematists as species of the same 

 value as their real parents. Such is especially 

 the case with a hybrid between Anemone magel- 

 lanica and the common Anemone sylvestris. 



Starting from similar considerations Kerner 

 von Marilaun pointed out the fact long ago that 

 many so-called species, of rare occurrence, 



