£- 



Fig. 3. — The relationship between gama, teosinte, and corn. 

 1. Gama grass {Tripsacum. dactyloides) . 2. Teosinte {EuchlcEna Mexicana). 

 3. Corn {Zea mays). 4. Floral parts of gama grass: a, tassel; b, spike of tassei, 

 bearing staminate flowers on upper part, and pistillate flowers on lower part; 

 c, ataminate flower ; d, pistillate flower. 5. Floral parts of teosinte. 6. Floral parts, 

 of corn. 



c 17 



