84 KANSAS Academy of Science. 



On Polygonum dwmetorum L., var. scandens Gr. 

 1639, July 1, 1889, Manhattan; 1654, July 4, 1889, Zeandale, Riley county. 



A comparison of Peronospora Rumicis Corda in Rabenhorst Fungi Europaei, Nos. 

 988 and 2677, with Peronospora Polygoni Thiim. in Ellis's North Am. Fungi, No. 1409, 

 and with specimens from Iowa and Kansas, showed that there were no constant dif- 

 ferences between Corda's P. Rumicis and Thiimen's P. Polygoni. Specimens on 

 Polygonum aviculare, collected by Mr. A. S. Hitchcock, at Iowa City, Iowa, were 

 almost exactly like Fungi Europaei, No. 988, on Rumex acetosella from Germany. 

 In Syll., vol. VII, p. 262, and Schroeter's Krypt. Flora Schles. Ill, p. 252, Peronospora 

 Rumicis Corda is said to occur on species of Polygonum. 



31. Peronospora Euphorbiae Fuckel, Fungi Rhenani Exs. No. 40; Symb. Myc, p. 71. 

 [Bot. Gaz., vol. VIII, p. 330; SylL, vol. VII, p. 257, No. 855.] 



Conidia and oospores on leaves, stems and inflorescences of Eupliorhiaceae, 

 August and September. 



On Euphorbia glyptosperma Englm. 



1873, with abundant mature oospores, on leaves, stems, and inflorescences, August 

 14, 1889, Manhattan; 1762, with nearly mature oospores, on leaves, stems, and in- 

 florescences, August 18,J889, Manhattan; 1667, with immature oospores, on leaves, 

 stems, and inflorescences, August 19, 1889, St. George, Pottawatomie county. 



On Euphorbia hypericifolia L. 



1787, on leaves, August 11, 1889, Manhattan; 1791, on leaves, stems, and inflo- 

 rescences, September 3, 1889, Manhattan. 



On Euphorbia maculata L. 



1770, on leaves, August 10, 1889, Manhattan; 1794, with nearly mature oospores, 

 on leaves, stems, and inflorescences, August 18, 1889, Manhattan; 1786, with abun- 

 dant immature oospores, on leaves, stems, and inflorescences, August 19, 1889. St. 

 George, Pottawatomie county; 1645, on leaves, stems, and inflorescences, September 



9, 1887, Manhattan. 



On Euphorbia serpens HBK. 



1869, on leaves, stems, and inflorescences, August 14, 1889, Manhattan; 1795, with 

 immature oospores, on leaves, stems, and inflorescences. September 1, 1889, Manhat- 

 tan; 1870, with abundant nearly mature oospores, but no conidia, on leaves, stems, 

 and inflorescences, September 16, 1889, Manhattan. 



This species is very abundant at Manhattan, and causes a distortion of the ends 

 of the branches, which become of a yellowish color. This is, perhaps, our latest 

 species to appear, as it has never been found until August. 



c. Species of uncertain section, whose oospores are unknown. 



32. Peronospora Sordida Berkeley, in Ann. Mag. Nat. Hist., 3d ser., vol. VII, p. 449. 

 [Bot. Gaz., vol. VIII, p. 333; Syll., vol. VII, p. 262, No. 881.] 



On leaves of Scrophulariaceae, May to September, and December. 



On Scrojihularia nodosa L. 



562, May 1.5, 1885, Manhattan; 1663, June 25, 1884, Manhattan; 1642, July 2, 1889, 

 Manhattan; 1789, August 11, 1889, Manhattan; 1799, September 1, 1889, Manhattan; 

 1901, September 26, 1889, Manhattan; 1608, December 1, 1888, Manhattan. 



