FUNGI OF ICELAND 465 
Peronosporaceae. 
Phytophthora De Bary. 
18. P. infestans (Montagne) De Bary, Saccardo, Syll. VII, p. 237. 
Experimental station at Eidar [P. L.]; experimental station at Reykja- 
vik [Buchwald]; garden at Reykjavik [Semundsson]. — On leaves of 
Solanum tuberosum. 
Cystopus Léveillé. 
19. C. candidus (Persoon) Léveillé, Sacc., Syll. fung. VII, p. 334. 
Grafarbakki [O. D.]; Vik (H. J.], Muli near Geysir [Feddersen]; Rey- 
kjavik [Svend Andersen]. — On leaves and stems of Draba incana, 
Cardamine hirsuta, Capsella bursa pastoris. 
Plasmopara Schroeter. 
20. P. densa (Rabenhorst) Schroeter. 
Peronospora densa Rabenhorst, Herbar. mycol. edit. 1. No, 1572. 
Videy [C. H. O.]. — On leaves of Rhinanthus minor. 
Peronospora Corda. 
21. P. Alsinearum Caspary, Saccardo, Syll. fung. VII, p. 246. 
Hof [O. D.]; Eskifjöröur and Dyrafjöröur [C. H. O.], Vighölsstadir [H.J.). 
— On Cerastium alpinum and C.trigynum. 
32. P. Ficariae Tulasne, Sacc., Syll. fung. VII, p. 251. 
Hofsfjall [O. D.); Reykjavik [C. H. O.]. — On Ranunculus acer. 
23. P. parasitica (Persoon) Tulasne. 
Botrytis parasitica Fries, Syst. Myc. III, p. 403. 
Hof, Torfastadir [O.D.). — On Capsella bursa pastoris and 
Cardamine pratensis. 
24. P. Trifoliorum De Bary, Sacc., Syll. fung. VII, p. 252. 
Hof (0. D.]. — On Trifolium repens. 
25. P. Viciae (Berkeley) De Bary, Sacc., Syll. fung. VII, p. 245. 
Grafabakki [O.D.). — On Vicia cracca. 
26. P. grisea (Unger) De Bary, Sacc., Syll. fung. VII, p. 255. 
Reykjavik [C. H.0.). — On Veronica serpyllifolia. 
27. P. alta Fuckel, Sacc., Syll. fung. VII, p. 262. 
Vogar near Myvatn (St. St]. — On Plantago major. 
The Botany of Iceland, Vol, II, part IIL 31 
