Si 



3) 



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55 



EXPLANATION OF PLATES. 225 



Plate fi^. 

 IV. 57. Wheat-straw attacked by mildew {Pticcinia gra- 



minis) . 

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

 „ 59. Single spore of corn-mildew (Fuccinia graminii) x 300. 

 „ 60. Portion of blade of grass with coronated mildew {Fuc- 



cinia coronata). 

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

 sori. 



62. Spore of coronated mildew (Tucmiia coronata) x 

 highly. 



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

 syngenesiarum) . 



64. Spores of Thistle-brand (Tucciaia syngenesiarum) x 

 320. 



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

 monies). 



66. Spore of Anemone-brand [Puccinia anemo7ies) x 320. 



67. Leaf of Centaurea nigra with brand. 



68. Spores of Composite-brand {Puccinia compositarum) 

 X 320. ^ 



69. Leaf of Mint with Mint-brand {Puccinia me?ithce). 



70. Spore of Mint-brand {Puccinia menthce) x 350. 



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

 umhelliferaruni) . 



72. Spore of Earth-nut brand {Puccinia umhelliferaruni) 

 x 320. 



73. Leaf of Gronnd-ivy with its brand {Puccinia Glecho- 

 matis). 



74. Spore of Ground-ivy brand {Pticcinia GlecJiomatis) 

 x 320. 



75. Pustule of brand surrounded by the ruptured epidermis, 

 magnified. 



7^. Portion of leaf and stem of Goatsbeard with brand. 

 117. Spores of the same x 320. 



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

 cinia ptdverulent a). 



79. Spores of Willow-herb brand {Puccinia puloerulentd) 

 X 320. 



80. Leaf of Pennywort with brand {Puccinia umhilici). 



81. Spores of Pennywort-brand {Pticcinia timhilici) x 320. 

 „ 82. Portion of leaf of Dandelion with its brand. 



„ 83. Spores of Variable -brand {Puccinia variabilis)- x 320. 

 V. 84. Grain of ^Wheat infected with Eoetid smut {Tilletia 



caries) . 

 „ 85. Longitudinal section of the same. 

 „ 86. Spores of Eoetid smut {Tilletia caries) mixed with 



delicate branching tiircads x 320. 



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