3 o8 CLASSIFIED LIST OF DISEASES 



Cynanchum 

 The leaves show small yellow fungus-bodies : Cronartium asclepia- 



deum, 175. 



Fagus 



1. The seedlings show dark patches on the leaves and stem, and 

 decay or wither : Phytophthora omnivora, 58. 



2. The stem of young plants contracts suddenly close to the surface 

 of the ground, and the tree withers : Pestalozzia Hartigii, 136. 



3. Young plants in the nursery are enveloped by a brown fungus : 

 Thelephora laciniata, 35. 



4. The leaves show white blotches : Erysiphe guttata, 70. 



5. The leaves show brown blotches : Spharella Fagi, 88. 



6. The cortex shows canker-spots: Nectria ditissima, 91; Frost- 

 canker, 293. 



7. The cortex is covered with a white woolly substance : Chermes 

 fagi, 96. 



8. The cortex shows pustular swellings : ibid. 



9. The cortex of branches is ruptured longitudinally : Lachnus 

 exsiccator, 96. 



10. The cortex of the stem withers on the south side : Bark- 

 scorching or Sun-crack, 294. 



n. The stem bears large bracket-like sporophores : Polyporus 

 fomentarius, 206. 



12. The wood shows a verdigris-green colour: Peziza ceruginosa, 



224. 



Fraxinus 



The cortex shows canker-spots : Nectria ditissima, 91. 



Gentiana 



Gentiana asclepiadea shows yellow fungus-bodies : Cronartium 

 asclepiadeum, 175. 



Gleditschia 



The branches bear mistletoe : Viscum, 25. 



Gramineae 



1. Culm and leaves show fungus-bodies, which are first yellow and 

 later brown : Puccinia graminis, 155. 



2. The spikelets are covered with a sweetish secretion or produce 

 black fungus-bodies : Claviceps purpurea, 98. 



3. The spikelets produce dark brown powder : Ustilago Carbo, 68. 



Hyacinthus 



The bulb becomes soft and slimy, and emits a repulsive smell : 

 Bacterium, 37. 



