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EXPLANATION OP PLATES. 231 



Plate fig. 



IV. 57, T\^ieat-straw attacked by milde^Y {Picccinia gra- 

 oniitis). 



58. Cluster of spores of corn-mildew, magnified {Bauer). 



59. Single spore of corn-mildew {Fuccinia gnunhni) x 300. 



60. Portion of blade of grass with coronated mildew {Fac- 

 cinia coronatci). 



61. Portion of same enlarged, showing the pustules^ or 

 sori. 



62. Spore of coronated mildew {Fuccinia coronata) x • 

 highly. 



63. Portion of leaf of Spear-thistle with its brand {Fuccinia 

 sifngenesiarum) . 



6i. Sporfs of Thistle-brand {Fuccinia syngenesiarum) x 

 320. 



65. Leaf of Wood-anemone with brand {Fuccinia ane- 

 mones). 



66. Spore of Anemone-brand {Fuccinia anemones) x 320. 



67. Leaf of Centaurea nigra with brand, 



68. Spores of Composite-brand {Fuccinia composifarum) 

 X 320. _ 



69. Leaf of Mint with Mint-brand {Fuccinia mentlKE). 



70. Spore of JMint-brand {Fuccinia menthoi) x 350. 



71. Portion of leaf of Earth-nut with brand {Fuccinia 

 un helliferarum) . 



72. Spore of Earth-nut brand {Fuccinia umheUiferarur.i) 

 X 320. 



73. Leaf of Ground-ivy with its brand {Fuccinia Glecho- 

 mutis). 



74. Spore of Ground-ivy brand {Fuccinia Glechomatis) 

 X 320. 



75. Pustule of brand surrounded by the ruptured epidermis, 

 magnified. 



76. Portion of leaf and stem of Goatsbeard with brand. 

 Spores of the same x 320. 



78. Portion of leaf of Willow-herb with its brand {Fuc- 

 cinia puhendenta^ . 



Spores of Willow-herb brand {Fuccinia pulverulenta) 

 X 320. 



Leaf of Pennywort with brand {Fuccinia umhiUci). 



Spores of Pennywort-brand {Fuccinia umhilici) x 320. 



Portion of leaf of Dandelion with its brand. 



Spores of Variable-brand {Fuccinia variabilis) x 320. 



Grain of Wheat infected with Eoetid smut {Tilletia 

 caries). 



Longitudinal section of the same. 



Spores of Foetid smut {Tilletia caries) mixed with 

 delicate branching threads x 320. 



33 

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33 

 33 

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