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Perisporiacese, Erysipheae, Uncinula. 7 



subglobosis, bisporis ; appendicibus perithecium vix superantibus, 

 apice uncinatis. 



Hab. in foliis Ulmi campestris in Gallia, Italia, Germania. 



2. Uncinuia macrospora Peck. 25 Rep. p. 95 (1871). — Mycelio eJBfuso, is 

 persistente ; peritheciis subglobosis ; appendiculis copiosis (30 vel 

 pluribus), perithecium fere sequantibus; ascis 8-12, bisporis; spo- 

 ridiis magnis ellipsoideis, 30-36 a. longis. 



Hab. in Amer. bor. Buffalo, in foliis Ulmi americanae. — 

 Ab U. Bivonce differt ascis et appendiculis copiosioribus, myce- 

 lioque persistente. 



3. Uncinuia intermedia B. et C, Berk. North Amer. Fungi n. 995 19 



(1876). — Peritheciis in macula lata candida insidentibus; ap- 

 pendicibus plurimis ; sporidiis majoribus, ternis. 



Hab. in foliis Ulmi, Alabama, Amer. bor. — Verisimiliter 

 non differt ab U. macrospora Peck. 



4. Uncinuia adunca (Wallr.) Lev. in Ann. Sc. nat. 1851, tom. XV., 

 p. 151, t. 7, f. 15, Alphitomorpha aclunca Wallr. — Mycelio 

 vario ; peritheciis sparsis vel gregariis, minutis ; ascis in singulo 

 perithecio 8-12, subpj^riformibus, 4-sporis; appendicibus simpli- 

 cibus uncinatis. 



Hab. in utraque pagina Populorum, Salicum, Betula- 

 rum in Europa tota, Sibiria asiatica, Amer. boreali. 



5. Uncinula Clintoni Peck. 26 Rep. p. 96. — Amphigena; mycelio te- 

 nui, persistente ; peritheciis minutis globosis, nigris ; appendiculis 

 15-25, perithecium subsequantibus, hyalinis, apice uncinatis pa- 

 rumque incrassatis ; ascis 4-6, 4-6-sporis. 



Hab. in Amer. bor. Buffalo, Watkins, in foliis Tilise ame- 

 ricanae. — Apicibus appendicularum incrassatis species facilo 

 dignoscenda. Mycelium in pag. superiore magis conspicuum. 



6. Uncinula Ampelopsidis Peck. 25 Rep. (1871). Unc. subfusca B. 22. 

 et C, Berk North. Amer. Fungi n." 994 (1876). — Amphigena; 

 mycelio arachnoideo, tenui evaoescente; peritheciis, minutis glo- 

 bosis, nigris; appendiculis 10-20 perithecium aequantibus vel duplo 

 longioribus, indivisis, obscure prope basim, septatis, fuscisque, 

 sursum pallidioribus ; ascis 4-6, subglobosis ovatisve, 4-6-sporis. 



Hab. in Amer. boreal. Buffalo, Greenbush, in foliis A m p e 1 - 

 psidis quinquefolice. — Appendicibus coloratis species mox 

 dignoscenda. Appendices sec. Berk. ssepe sursum contortse. 



7. Uncinuia Prunastri (DC) Sacc. Erysiphe Prunastri DC (1815) 



Uncinula Wallrothii Lev. in Ann. Sc. nat. 1851, XV., p. 153, 



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