104 University of California Puhlicafions in Botany [Vol. 5 



Habit — Short, with laterals widely spreading from the base, 

 and the 



Leaf — ovate subrotund, with a short, almost blunt tip and a 

 flat auricle. 



There was not a single individual which corresponded to 

 either of these two descriptions. 



A plant that could be spoken of as "intermediate" would 

 have exhibited the 



Flower color — Pink. 



Corolla limb — Pentagonal with angles elongated into short 

 hooks. 



Habit — Tall, with numerous laterals spreading from the base, 

 and 



Leaf — Lanceolate subrotund. with a long, curved, slender 

 tip and a somewhat ruffled auricle. 



A plant said to "resemble" one or the other parent would 

 show some three or four of its minor characteristics differing 

 from, but othenvise nearly identical with, the parent the ap- 

 pearance of which it most nearly approximated — i.e., approach- 

 ing the typical appearance of one of the parents as nearly as 

 the F^ (so-called) dominant approximated the appearance of 

 the y. Tabacum var. macropliylla parent. Finally, the plant 

 called a "blend" would show a typical flower of one parent com- 

 bined with an "intermediate" leaf-shape and the habit of the 

 other parent, or ?iny other of the possible combinations in which 

 one or two characters each, of both parents appears fully de- 

 veloped in the hybrid. 



2. Number of Plants in A^irious Groups 



The following table gives the number of plants from each 

 weight of seed and the combination of "characters" which they 

 exhibited. The meaning of the terms "intermediate," "re- 

 sembling" and "blend" have been described above. 



'o 



