EXPLANATION OF PLATES. LtJo 



Plate fie-. 



YI. 121. Portion of same, sliowinj arrangement of the pustules, 

 X slightly. 

 133. Spores of l)anded smut {I'sfilar/o grammicct) x 330. 

 133. Inflorescence of Scabious with iloret smut {C'.stilafjy 



Jlosc/donim). 

 131. Floret occupied by the smut. 



125. Spores of Floret smut {Ustilagoflosnilonm) x 330. 



126. Sedge {Carex riparia) attacked by Olive smut {Vatilago 

 olivacea). 



127. Spores of Olive smut {TJstilago oUi-acea) x 4G0, 



138. Reed stem with smut yUstilago fyphoides). 



139. Spores of Heed ^mni {Ustila go fi/p/ioicks) x 320. 



130. Leaf of Periwiukle with its rust {Trichobasis viricrp). 



131. Spores of Periwinkle rust {Trichohasis v'mccr) x 32iJ. 



132. Spores of Periwinkle brand {Vuccinia vinca) x 32U. 

 VII. 133. Leaf of Mercury with its rust {Uredo coiijluevs). 



131. Spores of Mercury rust {Uredo conjl/(f)/sj x 320. 

 135. Leaf of Enchanter's Tsightshade with its rust. 

 13(3. Spores of Nightshade rust {Uredo Circrea) x 320, 



137. Leaf of Sorrel with Twin-faced rust {Uredo bifro)is). 



138. Pustule of Twin-faced rust seated on a coloured spot 

 X slightly. 



139. Spores of the same nist x 320. 



140. Leaf of Wheat with Corn rust {Tricliobasis ncbigo-verd'j . 



141. Pustules of the same rust x slightly. 



142. Spores of Hound corn rust x 320. 



143. Tuft of spores of Elongated corn rust {Trichobasis 

 linearis) magnified. 



144. Spores of Elongated corn rust {Trichobasis linearis) 

 x320. 



145. Leaf of Groundsel with its rust {Trichobasis Senecionis). 



146. Spores of Groundsel rust {Trichobasis Senecionis) x 320. 



147. Wild Rose with Golden rust {Urornyces Ulmaria). 



148. Spores of Golden rust x 320. 



149. Leaf of Vetch with Long-stemmed rust {Urornyces- 

 appendiculala). 



150. Spores of the same x 400. 



151. Leaf of Connnon thistle with Sweet-smelling rust {Tri- 

 chobasis sv.areolens) . 



152. Spores of Sweet rust {Trichobasis suaveolens) x 320. 



153. Spermogone of Sweet rust, from common thistle,. 

 X highly {Be Bary) . 



154. Clover leaf with Short-stemmed rust {Urornyces apicu- 

 losa) . 



155. Spores of Short-stemmed rust x 320. 



156. Leaf of Pilewort with its rust {Urornyces Ficarifp). 



157. Spores of Pilewort ••ust {Urornyces Ficarice) x 320. 



