EXPLANATION OF PLATES. 253 



Plate flg. 



XII. 251. Conceptacle of Plantain blight {Erysiphe lamprocarpa) 



x80. 

 „ 252. Conceptacle of Paper bristle-mould {Chcetomium char- 



tarum) magnified. 

 „ 253. Sporidium of the same, further magnified. 

 „ 254. Conceptacle of Paper mildew {Ascotricha chartarum) 



magnified [Berkeley). 

 „ 255. Portion of thread of same with conidia, further mag 



nified {Berkeley). 

 „ 256. Sporangium of same, containing spores {Berkeley). 

 „ 257. Piece of straw with .Bristle mould {C/uetomium elatum). 

 „ 258. Conceptacle of same, slightly magnified. 

 „ 259. Section of same, further magnified. 

 „ 260. Dead leaf over-run with Herbarium mildew {Eurotium 



herbariorum). 

 „ 261. Conceptacles of the same, seated on their mycelium, 



magnified. 



XIII. 262. Fertile thread of Turnip mould {Peronospora parasitica) . 

 „ 263. Fertile thread of Onion mould {Pero/iospora Schlei- 



deniana). 



XIV. 264. Fertile thread of Potato mould {Peronospora infestans). 

 „ 265. Fertile thread of Lettuce mould {Peronospora gangli- 



formis). 



XV. 266. Fertile thread of Pea mould {Peronospora Vicice). 



„ 267. Fertile thread of Anemone mould {Peronospora curia). 



XVI. 268. Fertile thread of Sandwort mould {Peronospora are- 



nana). 

 „ 269. Fertile thread of Dock mould {Peronospora obliqua) 

 x 320. 



