222 THE AMEBIC AN NATURALIST [Vol. XLV 



D. This hybrid plant (Davis, '10, pp. 112 and 113), 

 an excellent blend of the parent forms, was similar to 

 Lamarckiana in habit and floral structure, but differed in 

 having smaller, uncrinkled leaves on the lower portions 

 of the plant and larger bracts upon the inflorescence. 



From about 600 seedlings 73 plants were carried 

 through the rosette stage and set in the ground, being 

 selected to represent various types. The seedlings were 

 strikingly diverse, some having long cotyledons similar 

 to those of grandiflora, others having shorter and broader 

 ones, and a large proportion with small light yellow, etio- 

 lated cotyledons. Many of the latter seedlings died before 

 the appearance of the second leaf, the others developed 

 very slowly, forming rosettes one-fourth or one-third the 

 size of the normal with more or less etiolated leaves. 

 Twenty-three of the dwarf rosettes were set out in the 

 garden and of these seven finally grew to be large plants 

 similar to the average of the culture, but with a some- 

 what etiolated foliage ; of the remainder several died and 

 the others developed into dwarf plants from 2-8 dm. high, 

 small leaved, sparsely branched, and with flowers smaller 

 than the average but larger than the biennis parent. 

 The behavior of these etiolated dwarfs resembled De 

 Vries's account of the appearance of the form albida in 

 his cultures of Lamarckiana. 



As the normal rosettes approached maturity it was 

 possible to distinguish certain ones as somewhat more 

 biennis-Yike or more grandiflora-]ike than the average, 

 and the mature plants which developed from these showed 

 similar points of resemblance to the respective parents 

 of the cross. Nevertheless, the culture as a whole pre- 

 sented these parental characters well blended, although 

 exhibiting a miK'h wider range of variation than the F x 

 generation of this cross. This variation appeared to 

 indicate a relative segregation of the parental characters 

 deserving of detail studies upon larger cultures. There 

 were a number of plants similar to the parent hybrid, 

 but none markedly nearer to Lamarckiana. 



