xxxii.] TARE OR VETCH, AND PEA MOULD. 265 



pea refuse should be gathered together and burnt, for it 

 is in this material that the resting-spores hibernate during 

 the winter, and burst into new growth in the early spring. 

 Resting-spores are not destroyed by passing through the 

 stomach of an animal as food. P. viciw, Berk., is a dis- 

 tinctly early species as distinguished from P. infestans, 

 Mont., the fungus of the potato disease, which is a dis- 

 tinctly late one. Being early, the late crops of peas are 

 seldom affected by this parasite ; they are, however, fre- 

 quently destroyed by the fungus next described. 



We have seen P. vicice, Berk., growing within the pods 

 of garden peas and upon the contained seeds. 



This parasite has been detected on the bush- vetch, 

 Vicia sepium, L. ; the common vetch, V. Sativa, L. ; 

 slender vetch, V. tetrasperma, Moench. ; Lathyrus macror- 

 rhizus, Wimm. ; and on many species of Pisum and Orobus. 



