52 THE BOTANICAL MAGAZINE. ivui. xxvi. No. sos. 



SoRAUER, Pflzkr. II. p. 132, fig 18 ; Prillieux, Malad. pi. 

 agric. I. p. 78, fig. 38-40. 



On Lycopersiciim esculentum Mill. (Peking ; Oct. 1910). 



Peronospora effusa Rabh. Sacc, Syll. VII. p. 256; Sorauer, 

 Pflzkr. II. p. 166 ; Prillieux, Malad. pi. agric. I. p. 14-2, fig. 



53 ; Engler, Pflzfam. I. I. p. 118. 



On Chenopodhim album L. (Peking ; Oct. 1910). 



On Spiracea oleracea Moll. (Fengtai near Peking ; Oct. 

 1910). 



Very commonlj^ one or two 3^ello\vish white spots of round- 

 ish or irregular forms, 5—10 m.m. in diameter, appear on each 

 attacked leaf; verj^ common in Peking. 



Peronoplasmopara cubensis (B. et C.) Clint. Sacc, Syll- 

 YII. p. 261 ; SoRAUER, Pflzkr. II. p. 162 ; Miyabe et Takaha- 

 SHi, in Transact. Sappro Natural Histor}' Societj', Vol. I. part 

 II. p. 14.9. 



On Cucurbita sp. (Prov. Chinshi, Hunan ; Oct. 11, 1908). 



On Cucumis Melo L. (Peking ; Oct. 1910). 



In Peking and its vicinity this fungus is not rare. It forms 

 yellowish spots but a little smaller than in the case of Pero- 

 nospora effusa Rabh., but I could not observe the black rotten 

 leaves that are characteristic symptoms of mildew diseases ; I 

 think this is due to the drj^ season, as, on the contrary, in 

 Hunan where the quantity of rainfall is much larger, I have 

 seen many wnth these sj^mptoms. 



Sclerospora graminicola Schrot. Sacc, Syll. VII. p. 238; 

 SoKAUER, Pflzkr. II. p. 152; Engler, Pflzfam. I. I. p. 114 fig. 99. 



On Setaria italica Kth. (Mountanous regions, northwest of 

 lichang, Hupei., Sept. 25, 1908). 



On Setaria glauca Beauv. (Peking ; Oct. 1910). 



I saw very few plants infected by this fungus here, this was 

 probably due to the lateness of the season. On the other hand, 

 in the mountainous regions of lichang, Hupei, I have observed 

 very many attacked plants with special whisklike upper leaves 

 or abnormal ears and this fungus causes great damage to the 

 cultivators there, while in the low^er plains of the Yangtz river 

 I could not find any, though I searched for one very carefully. 



