434 Stout: The Origin of Dwarf Plants 



summer of 1913 from seed of 191 2. The data for these can be 

 briefly summarized as follows: from plant No. 2, nine plants 

 were grown, of which four bloomed; from plant No. 3, forty- 

 plants, of which ten bloomed; and from No. 5, twenty-seven 

 plants, of which none came into flower. All of the plants in these 

 four series, 103 in number, were typical for the robust type with 

 no trace of any of the dwarf characteristics. The twenty-four 

 plants that bloomed were true to the H. oculiroseus type of flower. 

 None of the plants matured seed and every one was killed during 

 the winter of 1913-14. 



Plants of the second generation 

 In the summer of 1914 three series of plants were grown, 

 constituting a second generation in descent from the parent O 

 No. I. These may now be described. 



Series VII, The parent of this series was a dwarf plant (No. i 

 of Series I). Thirty-five plants were grown from seed of a single 

 pod. Twenty-seven were uniformly of the dwarf type; one was 

 a typical robust plant and seven were intermediates showing in 

 slight degree the characteristics of the dwarf type. Six plants 

 bloomed ; one had eyed flowers with pale pink in the blade (quite 

 similar to No. 8 of Series I), three had the eye somewhat diluted, 

 and on two the eye of the flower was so diluted that the flowers 

 appeared to be nearly pure white. The one plant of robust habit 

 had flowers of a type which suggests that it is a stray plant of 

 hybrid origin. 



Series VIII. Of the same parentage as the Series VII. Forty- 

 six plants were grown from selfed seed of a single capsule. Forty- 

 five of these were dwarf quite like the one from this series shown 

 on Plate 26. One plant was intermediate but was difTerent from 

 other intermediates in possessing a considerable development of 

 lateral branches, the main branch was itself robust and the leaves 

 were only slightly crinkled. The five plants that bloomed were 

 all typical for the H. oculiroseus type and were only slightly if any 

 smaller than the flowers of robust plants. The plants of this 

 series are shown in the middle of Plate 27 with the marker 

 standing in their midst. The plants of Series' VII are shown 



