Pound and Clements: north American hyphomycetes. 653 



16. SPOROSCHISMA B. & Br. Gard. Chron. 1847 : 540. 1847. 

 Sporophore simple, erect, fuscous; sheath cylindrical, fusc- 

 ous; conidia many-septate, oblong-cylindrical, fuscous. 



Contains one species. 



17. SPORENDONEMA Desm. Ann. Sci. Nat. Bot. I. 11: 246. 



1827. 



Vegetative hyphae creeping; sporophores erect; conidia 

 formed within the sporophores and pushing out in chains, 

 hyaline, becoming fuscous, globose or ellipsoid, continous. 



Sporendonema casei Desm. is an Alysidium. The genus as 

 now limited, was defined by Oudemans, A r er. Acad. Amsterd. 

 1885:115. 



1 species is described from the United States. 



Tribe Ramularieae Sacc. Syl. Fung. 4:196. 1886. 

 Parasites; sporophores distinct from the conidia, attaining 

 some length, simple or sub-simple; conidia solitary, or in Ram- 

 ularia sometimes sub-catenulate, acrogenous or acro-pleuroge- 

 nous on flexuose or nodulose sporophores. 



18. OVriARIA Sacc. Mich. 2:17. 1880. 



Sporophores erect, hyaline, sometimes slightly branched, 

 nodulose or subdenticulate towards the apex, or entire; conidia 

 globose or ovoid, continuous, hyaline, acro-pleurogenous or in 

 some species acrogenous, sometimes sub-catenulate. 



Massee has removed to this genus all of the species of Bamu- 

 laria with continuous spores, as a consistent following of Sac- 

 cardo's arrangement requires. We have preferred to limit it 

 to those species with ovoid spores, though inclined to think it 

 still better to unite Ovularia and Didymaria with Ramularia. 



As here limited, contains 9 species reported from the United 



States. The most common is: 



Ovularia monosporia (West.) 



Oidium monosporiu/m West. Bull. Soo. Roy. Bot. Belg. 2:252. 1863. 

 Peronnspora obliqua Cooke. Micr. Fung. 160. 1865. 

 Ramularia obovata Fkl. Symb. Myc. 103. 1869. 

 Ovularia obovata Sacc. Fung. Ital. 972. 1881. 

 Ovularia obliqua Om>. Hedw. 22:85. 1883. 



19. HADOTRICHIM Fkl. Symb. Myc. 221. 1869. 

 Sporophores short, simple, rather thick and stout or in some 



species sub-nodulose or flexuose, fuscous, fasciculate at the 

 base; conidia black or fuscous, continuous, globose, elliptical, 

 or ovoid, solitary acrogenous. 



4 species are reported from the United States. Some of the 

 species are conidial forms of Scirrhla. 



