3) 



3> 



35 



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93 

 33 



EXPLAXATION OF PLATES. 235 



Plate fls:. 



IX. lUl. Portion of Sallow leaf with "Willow wed^e-rust (Jle- 

 lampsora salicina). 



192. Winter spores of 21eIan>psora salicina x 4G0. 



193. Leaves of Spurge with Spurge wedge-rust {Melamj^ftora 

 Eiiphorliice). 



19i. Winter spores of Melampsora Enphorhife x liiu'lily. 



195. Portion of Poplar-leaf with Poplar wedge-rust (J/> 

 lampsora populina) . 



196. "Winter spores of Melampsora pop^dina x 460, 



197. Winter spores of Melamp^^ora hetulina in active ger- 

 mination — a sporidia X 466 {Tidasne). 



X. 19S. Pruit of Shepherd's Purse with White rust {Cystopiis 

 candidus). 



„ 199. Portion of Cabbage-leaf with Wliite rust [Cystopus can- 

 didus). 



200, Conidia of White rust {Ci'stopiis candidus) x 360. 



201. Portion of Goatsbeard-leaf with White rust {Cystopus 

 cidjicus). 



„ 202. Conidia of Goatsbeard white rust {Cystopu% cuhicus) 



x360. 

 „ 203, Portion of Mycelium producing the first of a chain of 



conidia x 400. 

 „ 204. Mycelium of White rust with sucker-like processes 



x360. 

 „ 205. Mycelium of Wliite rust with nascent oogonia x 360. 

 „ 206. Oogonium of Crucifer white rust {Cystopus candidus) 



^m){J)eBary). 

 „ 207. The same, further advanced, ruptured, with zoospores, 



X 400. 

 „ 20S, Pree zoospores of White rust, with their ciliae, x 400 



{BeBanj). 



209. Pesting zoospores in germination x 400 {T)e BanJ). 



210. Oogonium of Goatsbeard white rust {Cystopus cubicus) 

 X 4:00 {Be Bary). 



211. Oogonium of Sandwort mould {Peronospora arenarice) 

 x400 {BeBanj). 



„ 212. Oogonium of Pea mould {Peronospora vici^) x 400 {Be 



Bary). 

 „ 213. Oogonium of A'^eronica mould {Peronospora griseci) 



x400 {Be Bary). 

 „ 214. Oo2:onium of Spinach mould {Peronospora effusd) x 400 



\BeBary). 

 „ 215. Leaf of Goosefoot with mould {Peronospora effusa). 



XI. 216. Conceptacle of Hop mildew {Spha;rotheca castagne)i 

 x80. 



„ 217. Conceptacle of Pose blight {Splia^rotlieca pannosd) x 80. 

 „ 218. Sporangium of /S)?//<ero^//^mi5«/^«o56^ X highly. 



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33 



33 



