Exflanation of Plates. 



PLATE XXX. 



[All Figures x 500 -unless otherwise stated.) 



SOROSPORIUM REILIANUM. 



Fig. 



37. Spore-balls from a very young smutted cob of maize . . ... .-. x 250 



38. Spores. 



39. 40. Germinating spores, with formation of eonidia. 



41. Spore germination in nutritive solution (after Brefeld) x 350. The successive 



development of the germination shown, the eonidia finally becoming detached, 

 and sproi;ting in a yeast-like manner so as to form small colonies. 



42. Germination of spores after three days in water (after Norton) „. .„ x 600 



43. Spore germination in nutritive solution from another culture (after Brefeld) x 350 



The spore on the right has produced three germinal tubes, bearing numerous 

 eonidia, some of which have formed germ-tubes while still attached. 



