23^ Exflanation of Plates. 



PLATE XXXVII. 



LAll Figures x 500 unless otherwise stated.) 



USTILAGO AND CINTRACTIA. 

 Fig. 



90. Section through axis of inflorescence of Danthonia pilosa affected by 



U. comhurens . , . . . . ... . . . . X 50 



91. Similar section enlarged . . . . . . . . . . . . x 100 



92. Spores of same. 



93. Section through stroma of C. leucoderma on Bynchospora aurea. . . . x 60 



94. Spores of same. 



95. Section through stroma of C. axicola on Fimbristylis . . . . x 50 



96. Spores of same. 



