20 



TUNGOID PESTS OF CULTIVATED PLANTS. 



The common Clematis cluster-cup (JEcidium Clematidis) occurs over 

 the greater part of Europe, on the leaves of C. Vitalba, C. recta, and C. 

 Flammula. 



.-& 



Fig. J. Ovularia Clematidis. 



I. Section of petal with mycelium (a) and conidiophores lb, c, d) ; 2. ConieLo- 

 phore with conidium ; 3. Conidia x 100; 4. Conidium (o) germinating (6). 



Another cluster- cup (.Kcidiuiit Englerianum) ha^ been found on 

 Clematis Leaves in Abyssinia. 



In India another species {&cidiivm orbiculare) has been found on 



