Smithsonian Report, 1937. Kempton 



Plate 30 



I 



1. Chromosomes in a Pollen Mother Cell of Guatemala Teosinte 

 (euchlaena mexicana;. showing chromosomes with terminal knobs 



.Mat:nilie<l alioiii l.otio times. 



^-^: 



2. Two Ears of Maize Showing the Female Flowers Completely Sup- 

 planted BY Male Spikelets. 



In other forms of maize showinjr sex aberrations the normally female spikelets become i^erfecl -flowered, 

 each seed being accompanied by three stamens. (Five-si.\ths natural size.) 



