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THE AMERICAN NATURALIST [Vol. XL V 



the parents thoroughly blended in the form and propor- 

 tions of habit, foliage, and flowers. Considering the cul- 

 tures as a whole, there seemed to be no marked difference 

 between the first cross and its reciprocal. 



The average types of hybrids in both crosses were es- 

 sentially similar and a number of types were very close 

 to the hybrids 10.30 La and 10.30 Lb of the previously 

 described culture. Six plants in culture 10.19 were 

 selected for special peculiarities, but these will not be de- 

 scribed unless their behavior in the F 2 generation should 

 justify a detailed account. 



3. grandiflora A X biennis B (10.17), and the recipro- 

 cal cross (10.20). From about 200 seedlings of the first 

 culture and about 150 seedlings of the second culture, 

 49 and 60 plants, respectively, were brought to maturity, 

 being selected for the breadth of the cotyledon and 

 shortness of its petiole. These cultures were grown in 

 a stiff clay at the Botanic Garden and presented an in- 

 teresting contrast to the cultures previously described 

 which were grown in a somewhat sandy well-fertilized 

 soil. The plants were smaller and less vigorous vegeta- 

 tively, although they flowered very freely. The rosettes 

 and mature plants presented the characteristics of the 

 parents well blended as in the other cultures. There 

 were also a few extreme types that resembled one or the 

 other of the parents more closely than the average. 

 There appeared to be no significant differences between 

 the first cross and its reciprocal. Two plants with 

 marked peculiarities were selected from culture 10.17 

 and will be carried through an F 2 generation; they will 

 be described if their further cultivation proves of 

 interest. 



Although the evidence, not being quantitative in char- 

 acter, is incomplete, nevertheless the following points 

 may be noted, at least provisionally, from these observa- 

 tions on F 1 generations. (1) There was no indication 

 from these cultures of a marked preponderance of 

 either paternal or maternal influence upon the hybrids. 



