COLLINS AND KEMPTON: A NEW HYBRID 117 



but it can be said that the hybrid plant more nearly resembled 

 normal teosinte grown in the open than did any of the green- 

 house grown teosinte plants themselves. With respect to all 

 the differences listed above, the hybrid resembled Euchlaena. 

 The only suggestion of a Tripsacum character was that the main 

 stalk matured some days in advance of the branches or suckers. 

 This might be taken as a shght indication of a tendency toward 

 perennial habit. On the other hand this tendency may exist in 

 Euchlaena, which has not been carefully examined with this 

 character in mind. Seed was produced in abundance and was 

 indistinguishable from that of pure teosinte. Some of this first 

 generation hybrid seed has been planted and a number have 

 germinated showing the hybrid to be fertile. 



The chief points of interest in this hybrid may be summarized 

 as follows: 



1. The hybrid is bigeneric, and the parent types differ in pro- 

 found morphological characters. 



2. One of the parents is strictly annual, the otlier perennial, 

 requiring several years to mature. 



3. None of the characters of the female parent appeared in 

 the first generation; that is, the hybrid is completely patroclinous. 



