XIII. FUNGI. 



959 



Ascophora Muccdo. 

 Young and adult. 



Ascophora Mucedo. 

 v, central vesicle ; 

 , spores ; p, outer pellicle. 



Phragmidium mucronatum. 



Sporangium in the middle of 



the cystides of Uredo Rosce. 



Ustilago ureeolorum. 

 Smut of Carcx. Fruit 

 shrunk and torn by the 

 action of the Ustilago. 



Ustilago ureeolorum. 

 Fruit of Carex cut verti- 

 cally, showing the abor. 

 tive ovule and the Smut 



which surrounds it. 



Ascophora Mucedo. 



Group of sporangia in different 



stages of growth. 



Macrosporium gramineum. 

 a, young spores ; b, sporangium. 



Uredo Vilmorinea. Large Rust. 

 Spores of different ages. 



Uredo Rubiyo-vera. 



Bust of Wheat. 



Spores. 



Ascophora Mucedo. 

 Withered vesicle. 



Botrylis (mag.). 



R&stelia cancellala. 



Lower surface of a fragment of the 



leaf of a Pear. 



Rcestelia canccllata. 



One of the 

 receptacles (mag.). 



Uredo Rosen. 



Rust of Rose. Group of very 

 young spores with the cystides. 



Uredo Rosce. 



Spores, spherical or 



angular. 



Ergot of Wheat, 

 cut vertically, sur- 

 mounted by the spha- 

 celium and the 

 abortive flower. 



