316 CLASSIFIED LIST OF DISEASES 



Tilia 



1. The twigs and branches die, and produce cinnabar-coloured 

 fungus-bodies : Nectria cinnabarina, 96. 



2. The cortex shows canker-spots : Nectria ditissima^ 91. 



Trifolium and Lucerne 



1. Roots attacked by violet Rhizoctonia^ 82. 



2. Close to the root-collar white mycelia and black resting-mycelia 

 may be detected : Peziza dboriodes, 130. 



Tsuga 



The leaves and shoots enveloped in white mycelia, the former 

 dying: Trichosphczria parasitica, 72. 



Ulmus 

 The leaves show vesicular blotches : Exoascus Ulmi^ 135. 



Vaccinium Myrtillus 



1. The young shoots die and the berries shrivel up : Sderotinia 

 baccarum, 130. 



2. The leaves show small brown blotches : Melampsora Vacdnii, 

 171. 



Vaccinium Vitis-idaea 



1. The stem becomes much elongated, and attains the thickness of 

 a goose-quill : Melampsora Goeppertiana, 161. 



2. Leaves, flowers, and stem are swollen, and dusted with white 

 spores: Exobasidium Vacdnii > 185. 



3. Leaves, fruit, and young shoots become brown : Sderotinia 

 Vacdnii) 130. 



Vitis 



1. Leaves, stem, and berries show mildew : Oidium Tuckeri, 70. 



2. The leaves show yellow blotches above and white blotches 

 below : Peronospora viticola, 65. 



3. The berries wither : Physalospora Bidwellii^ 103. 



4. The berries are pale in colour, and their stalks decay : Coniothy- 

 rium diplodiella, 103. 



5. The roots are killed by Rhizoctoniae and Rhizomorphs : Demato- 

 phora necatrix, 82. 



6. All parts of the plant show brown or black blotches : Glceosporium 

 ampelophagum, 104. 



Zea 



Leaves, flowers, and stem show black vesicles filled with spores : 

 Ustilago Maydis, 68. 



