Perisporiaeese, Erysiphese, Mierosphsera. 11 



Flandr. I. 379. — Erysiphe abnormis Duby p. p. — Mycelio 

 effuso arachnoideo vel subcontexto evanido vel persistente: peri- 

 theciis sparsis vel gregariis globosis, rainutis; ascis 4 ovatis sub- 

 rostratis 4-sporis; appendicibus parcis (7-10) perithecio vix lon- 

 gioribus, ramulis bicornibus. 



Ha^. in Italia, Gallia, in foliis Lonicerpe Caprifolii; Araer. 

 bor. in foliis Lonicerse parviflorae. 



3. MicrosphaBra Hedwigii Lev. in Ann. Scienc. nat. 1851, XV, p. 155, 35 

 t. 8, fig. 19. — Hypophylla; mycelio arachnoideo, evanido ; peri- 

 theciis minutis globosis, sparsis; appendicibus paucis, perithecio 

 paulo longioribus ; ascis quaternis, 4-sporis. 



Hab. in Anglia, Italia, Belgio, Germania, Amer. bor. in foliis 

 Viburni Lantanse, V. Lentaginis (et Quercus t. Berk.) 

 Forte E. Viburni Schw. (et Howe?) huc spectat. 



4. Microsphaera abbreviata Peck 28 Rep. St. M^s. N. York. t. 2, fig. 4- 36 



5. — Mycelio tenui; peritheciis minutis, appendicibus 6-15, hyali- 

 nis, asperulis, perithecio brevioribus, apice pluries dichotorais, ra- 

 mulis ultimis curvatis ; ascis 3-4, plerumque 4-sporis, rarius 3-5- 

 sporis; sporidiis ellipsoideis 25-32 ^i 16. 



Hab. in Araer. bor. Buffalo, in pag. inf. foliorura Quercus bi- 

 coloris (Clinton). — Affinis M. Hedwigii, a qua differt ap- 

 pendicibus scabriusculis, brevibus, 



5. Mycrosphaera divaricata (Wallr.) Lev. in Ann. Scienc. nat. 1851, 37 

 tom. XV, p. 155, t. 8, f. 18. Alphitomorpha diva^Hcata Wallr. 



— Hypophylla; mycelio arachnoideo, evanido; peritheciis sparsis, 

 sphasroideis, minutis ; ascis in quovis perithecio 4, ovoideo-rostra- 

 tis, 4-sporis ; appendicibus parcis, perithecio quinquies longioribus. 



Hab. in Gallia, Germania, Fennia, Belgio, in foliis vivis Rha- 

 mni Frangulse sestate et autumno passim. 



6. MicrosphaBra Evonymi (DC.) Sacc. Erysiphe Evonymi DC. (1815). 38 



Mior. comata (Wallr.) Lev. Ann. Sc. nat. 1851, XV, p. 157, t. 9, 

 f. 23. Alphitomorpha comata Wallr. (1819). — Hypophylla; my- 

 celio arachnoideo, fugaci; peritheciis sparsis, minutis, globosis; 

 ascis 8, ovoideo-subrostratis, 4-sporis; appendicibus paucis, peri- 

 thecio sextuplo longioribus. 



Hab. in Gallia, Italia, Germania, Anglia, Belgio in foliis Fvo- 

 nyrai europjei, auturano. 



7. Microsphaera semitonsa. B. et C. Berk. North Am. Fungi N. 996. 39 



— Mycelio parco; peritheciis sparsis ; appendicibus deorsum abru- 

 pte fuscis ; sporidiis quaternis. 



