122 CARL D. LA RUE AND H. H. BARTLETT 
pollinated seeds. Each progeny represented in the chart has a key 
number which serves to identify it with the detailed analysis of the 
same progeny in Table I. Several of the earlier progenies were not as 
Pi 
I 
■2 vSi 
"3 
-T T 
\/^, 
Jb 
i- JT 
J? 
Fig. I. Pedigree of Oenothera Reynoldsii and its mutations. Each numbered 
progeny is represented by a circle. T = typica. S = semialta. D =dehilis. B=bi- 
longa. R = rigida. = uniform culture of typica. = polymorphic culture con- 
taining typica. Letters on the lines leading to circles indicate the parentage of the 
cultures. A star (*) indicates a plant used as a parent for the crosses referred to in 
Table II. 
large as seemed desirable, on which account supplementary cultures 
were in several cases grown a year or two later from any seeds that 
had been left over. Such division of progenies between two seasons 
has provided a very desirable check on the classification of the plants, 
