Perisporiacea?, Erj^sipheso, Uncinula. 



Hab. in Araer. sept. ad folia Nyssae (herb. DC); Canada, 

 Poe (n. 6164 ex Grevillea). — A Ph. suffulta (Reb.) differt ascis 

 octonis, tetrasporis. 



?Phyllactinia Schweinitzii L<H'. Disp. meth. Erysiph. p. 42. — 15 

 Hypophylla; mycelio arachnoideo, evanido; peritheciis magiiis, 

 sparsis, hemispharicis demum depressis, appendicibus nigris; ascis 

 sporidiisque 



llab. Meudon (Gallia), ad foha Quercus sessiliflorae (Lev. 

 1. c). — Species dubia et ob ignotam fructificationem et ob de- 

 fectum vesiculae basilaris appendicularum. 



?Phyllactinia fungicola (Schulz.) Sacc. Enjszphe fungicola Schulz. ^ 

 Myk. iu (Esterr. bot. Zeit. 1876, p. 58. — Peritheciis brunneo- 

 fuscis, sphajricis, 300 [x. diam., subiculo mucedineo stellatim ef- 

 fuso iusidentibus; conidiis in hyphis acrogenis brunneis; appen- 

 dicibus radiatis, basi inflatis; ascis vesicularibus, copiosis, 1-2- 

 sporis; sporidiis ovato-cylindraceis 4^1,5. 



Hab. in superficie Boleti duriusculi, Slavonia. — Videtur 

 Phyllactinice species, sed ob habitationem insuetam dubia. 



UNCINULA Lev. in Ann. Sc. nat. 1851, XVI, p. 151. (Etym. ab unco, 

 quia appendices uncinatas). — Perithecia polyasca, ascis bi-octo- 

 sporis; appendices simplices ramosaeve, apice uncinatai, hyalinje. 

 Mycelium arachnoideum v. pruinosum, conidiis ovoideis, Oidii ery- 

 siphoidis formas sistens. 



Clavis specierum. 



. ( in quovis perithecio quaterni .... Bivonae. 



^ ' \ \\\ quovis perithecio plures (8-12) . . . macrospora 



Asci trispori intermedia 



Asci tetraspori adunca 



appendices omnino liyalinae Clintonii 



Asci 4-6-spori ^ ,- , ^. 1 •■ » , ■ i- 



( appendices deorsum luligmeae .... Ampelopsidts 



. . „ ( appendices sursum non contortaj , . . Prunastri 



Asci G-spori i ,. . ... , , 



^ ( appenuices sursuni spirahter contortse . amertcana 



!( appcndices Uexuosie flexuosa 

 conidia ovoidea < appendices \ '^i'.'^^' ^^' 

 I '^i'!;^""'*'^'' f cmatae Acerts 

 \ i*^cia) ^ simplices circinata 

 conldia globosa Tulasnei 



1. Uncinula Bivonae Lrv. in Ann. Scienc. nat. XV. 1851 t. 7 fig. 14. n 

 E)-l/s/}thc cl(U)(frs/i})a !>iv. l!ern. (1815). — Mycelio ai-aclinoideo 

 evanido; peritheciis plerumque sparsis minutis; ascis quaternis, 



