352 Sex Characters in Begonias 



EXPLANATION OF PLATES. 



PLATE XVI. 



Fig. 1. Shows to the liglit an abnormal hermaphrodite flower in association with an 



asymmetrical floral bract. 

 Fig. 2. Shows "exposed ovules'" in a partially hermaphrodite flower. 

 Fig. 3. Shows female sex organs, ovules, in a peripheral position on a primarily male 



flower. (See also Fig. 8.) 

 Fig. 4. A primarily male abnormal flower with a ring of pistillate structures peripheral to 



the central androecium. This flower, although partly hermaphrodite, preserves the 



four petals characteristic of the male flower. 

 Fig. 5. A ijrimarily male flower partly hermaphrodite with oue or two pistillate structures 



periijherally situated on the floral axis. This flower had four petals only. 

 Fig. 6. Abnormal primarily female flower with a peripheral ring of stamens round a 



central gynoecium and the Ave petals characteristic of the female flower. 

 Fig. 7. Two primarily female hermaphrodite flowers. A peripheral ring of stamens 



surrounds the gynoecium in each case. 

 Fig. 8. Terminal primarily male flower with abnormal stamens, multilocular anthers, 



and ovules peripherally placed on the petals. Though partly hermaphrodite it has 



the four petals characteristic of the male flower. 



PLATE XVII. 



Fig. 1. Inflorescence of maize plant showing a serial alternation on the same peduncle 

 of male and female florets. 



Fig. 2. Magnified view of same. 



