PLATE 25 » 



A. — QDnidiophore from sorghum, partly matured and bearing few conidia. Com- 

 pare with Plate 24, A. X 375. 



B. — Conidiophore from teosinte, nearly mature, with extensive system of branches 

 bearing many conidia. Compare with Plate 24, C. X 375- 



C. — Typical conidia from sorghum. Three are germinating in dew by means of 

 relatively simple hyphae. X 375- 



D. — Typical conidia from teosinte. X 375- 



E. — Typical conidia from teosinte which have germinated in dew on the leaf surface. 



X 375- 

 F. — Conidium from teosinte germinating by an extensive branched hypha when 



maintained in dew at7°C. X375. 



G. — Conidium from teosinte germinating while still attached to its sterigma. X 

 500. 



H. — Typical conidia from maize, showing common variations in shape and size. 



X37S- 

 I. — Two conidia from maize just begixming to germinate in rain water. X 375- 

 J. — Two conidia from maize germinating in sterilized brook water maintained at 



8°C. X37S- 

 K. — Conidium from maize germinating in dew on the leaf surface. X 375- 

 L. — Conidium from maize giving rise to extensive branching hyphae in a dilute 



decoction of young maize kernels. X 375. 



' The drawings were made with the aid ol a camera lucida and are all from fresh material with the 

 exception of A and G. 



