146 
cops hares Fries. 
rinum, Pers. On living leaves of Acer campestre and A. 
Pastas The large black blotches so common ca- 
more leaves are caused by this fungus, w which does considerable 
injury, causing the leaves to fall early in ai Longo consequently 
the wood is not properly matured, and the of accumulated 
food insufficient for the following year's cce, The fungus 
remains on the fallen leaves during the winter, and matures its 
fruit in the spring when the young sycamore leave s are inoculated. 
The disease can be arrested if the diseased leaves are collected 
and burned soon after they fall. 
R. punctatum, Fries. On living leaves of Acer Pseudoplatanus. 
R. salicinum, Fries. On living leaves of Saliz Caprea and S. 
viminalis. 
STIGMATEAE. 
Stigmatea, Fries. 
S. robertiana, Fries. On living leaves of Geranium robertianum. 
S. Hgopodii, Fries. On living leaves of Aegopodium. 
DIATRYPEAE. 
Diatrype, Fries. 
D. Brassicae, Cke. On dead cabbage stalks. 
D. verruciformis, Ehr. On dead branches of Fagus sylvatica. 
D. quercina, Fries. On dead branches of Quercus. 
D. Stigma, Hoffm. On dead wood. 
VALSEAE. 
Valsa, Fries. 
V. leucostoma, Pers. On branches of Prunus. 
V. stellulata, Fries. On branches of Ulmus campestris. 
V. Ailanthi, Saccardo. On bark of Ailanthus glandulosa. 
V. ceratophora, Tu/. On branches of Ulmus montana. 
V. dissepta, Fries. On branches of Ulmus campestris. 
V. Betulae, Tul. On bark of Betula alba. 
V. Hippocastani, Cke. On branches of Aesculus Hippocastanum. 
V. taleola, Fries. On bark of Quercus. 
V. oncostoma, Duby. On twigs of Robinia Pseudacacia 
V. robergeana, Desm, On dead fallen branches, 
