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



1. Gama grass {Tripsacum dactyldides). 2. Teosinte {Euchlcsna Mexicana). 

 3. Com (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, staminate flower ; t/, pistillate flower. 5. Floral parts of teosinte. 6. Floral parts. 

 of corn. 



c 17 



