THE PERONOSPOREZ OF NORTH AYRSHIRE. 29 
Genus Peronospora, Corda. 
4. Peronospora nivea, Unger.—On Lgopodium Podagraria ; 
common; Largs and West Kilbride. On Sanicula europea ; 
frequent ; Ardneil Bank Wood. On Angelica sylvestris ; frequent ; 
West Kilbride and Ardrossan. On Anthriscus sylvestris; frequent; 
Noddsdale and Kilbride Glens, 
5. P. densa, Rabh.—On Rhinanthus Crista-gallt, common ; 
Noddsdale, Crosbie, Ardneil Bank, West Kilbride, &. On Bartsia 
Odontites ; frequent ; Noddsdale, Ardneil Bank, West Kilbride. 
On Euphrasia officinalis, not common ; various places near West 
Kilbride. 
6. P. lactuex, Regel.—On Senecio vulgaris ; frequent ; Sea- 
mill. On Sonchus asper ; rave ; Noddsdale. 
7. P. calotheea, De Bary.—On Galium verum ; not common : 
sea-shore near Yonderfield and Seamill. On G. Aparine ; rare ; 
near Carlung. On Asperula odorata, not common 3 Noadsdale. 
8. P. myosotidis, De Bary.—On Myosotis arvensis ; rare ; 
Ardneil Bay. 
9. P. vicize, Berk.—On Piswm sativum s locally common ; Sea- 
mill. On Vicia sativa and J. angustifolia ; frequent; various 
places near West Kilbride. 
10. P. alsinearum, Caspary.—On Stellaria media ; common; 
Kilrusken, Seamill, &. On Cerastium trivial ; frequent ; Sea- 
mill. 
11. P. arenarie, Berk.—On Arenaria trinervia ; not common; 
Noddsdale. On A. peploides ; common ; Sea-shore at Yonderfield, 
Chapelton, &c. 
12. P. parasitica, Pers. —On Cheiranthus cheirz,; not common ; 
Seamill. é 
13. P. ficariz, Tul—On Ranunculus Ficaria » common ; 
Noddsdale and West Kilbride. 
14. P. obovata, Bon.—On Spergula arvensis : frequent (pro- 
bably common, but readily overlooked); various places near West 
Kilbride, 
15. P. trifoliorum, De Bary.—On Trifolium medium; not 
common ; nearSeamill. On 7. minus ; not common ; Noddsdale, 
