XIII. FUNGI. 



959 



Ascophora Mucedo. 

 Young and adult. 



Ascophora Mucedo. 



v, central Tesicle ; 



5, spores ; p, outer pellicle. 



Peniciltium glaucum* 



Phragmidium mucronatum. 



Sporangium, in the middle of 



the cystides of Uredo Rosoe. 



UsHlago urceolorunu 

 Smut of Carex. Fruit 

 shrunk and torn by the 

 actiooi of the Ustilago. 



Ustilago urccolorum. 

 Fruit of Carex cut verti- 

 cally, showing the abor- 

 tive ovule and the Smut 



■which surrounds it. 



Ascophora Mucedo. 



Group of sporangia in cKffeirenft 



stages of growth. 



Macrosporium gramineum^ 

 (4, young spores. ; 6, sjHjrangium. 



Uredo Vilmorinea. Large Rust. 

 Spores of different ages. 



Uredo RuUgo-vera. 



Rust of Wheat. 



Spores. 



Ascophora Mucedo. 

 "Withered vesicle. 



Botrylis (mag.)» 



Roestelia cancellata. 



Lower surface of a fragment of the 



leaf of a Fear. 



Ra. 



One of the 

 receptacles (mag.). 



Uredo Rosce. 

 Rust of Rose. Grroup of very 

 yonng spores with the cystides. 



Uredo Rosa;, 



Spores, spherical or 



angular. 



Ergot of Wheat, 

 cut vertically, sur- 

 mounted by the spha- 

 celium and the 

 abortive flower. 



