Erysiphe 237 



A, cpigaca Wallr. BerL Ges. Nat. Freund. Verhandl, i : 44. 

 1819; and Ann. Wett. Ges. 4 : 246. 18 19. From the descrip- 

 tion given there Is no doubt that this fungus is to be placed out- 

 side the Erj^siphaceae, as Dietrich (107, p. 343) has already re- 

 marked. Karsten (194) considers it the *'sclerotium-stage " of 

 Lanosa nivalis Fr. 



A. epixylon Schlect. BerL Ges. Nat. Freund. Verh. i : 50. 

 1819. No specimen seen. 



Erysibe acariforme (Sow.) Gray, Nat. Arr. Brit. PL i : 590. 

 182 1 = Hypoxylon cocciiicuui BulL 



E, So7vcrbii Gray, /. c. = Coprinus radicns (Desm.) Fr. 



Erysiphe Tordylii Chev. FL Par. i: 380. 1826. On Tardy Hum 

 maxi^num. No specimen seen ; very probably E. polygoni, 



Erysibe Wallr. FL Crypt. Germ. 2: 198-218. 1833. All 

 the species of this genus belong to the Uredineae {Uredo^ UstUago^ 

 Puccinia, Tillctia, etc.). 



Erysiphe lathyri Mer. Rev. FL Par. 459. 1843. O^ Lathyrus 

 latifoVms. No specimen seen. 



E, sax if rag a c sibericae Mer. /. c. On Saxifraga Siberica. 

 No specimens seen. 



E. tiliac Men /. c. On the lime. No specimens seen. 



Phyllactinia Schweinitzii Lev. Ann. sci. nat. III. 15 : 150.//. 

 7^f' ^3' 1S51 ; Sacc. Syll. Fung, i : 6. 1882. Leveille made 

 two sections of his genus PJiyllactiiiia — one characterized by the 

 bulbous appendages, the other described as possessing ''Appen- 

 diculae nigrae vesicula basilari destitutae." The latter contained 

 only P. Schiveinitzii, described as follows : " Hypophylla, My- 

 celio arachnoideo evanido. Conceptaculis magnis, sparsis, hemi- 

 sphaericis, demum depressis. Sporangiis . . . sporis . . . ap- 

 pendiculis nigris. Hab. Meudon, ad folia Quercns sessilijlorae. 

 Obs. J'aurais dCi passer sous silence cette espece, comme je I'ai fait 

 de beaucoup d'autres dout je n'ai pas vu la fructification, mais je 

 ne le pouvais pas ; ses appendicules solides, noires et depourvues 

 de vesicules a la base lui impriment un caractere particulier qui 

 empeche de la confondre avec aucune autre espece connue jusqu'a 

 ce jour." Nothing further has been known about this species 

 since Leveille's time, and I have not been able to find any exam- 

 ple among the specimens of Erysiphaceae sent by Leveille to 



