666 MINNESOTA BOTANICAL STUDIES. 



16. STACHYLIDIUM Lk. Obs. Myc. 1:13. 1809. 

 Sporophores verticillately branched, fuscous; conidia capi- 

 tate, globose or elliptical. 



2 species are described from this country. 



17. CHAETOPSIS Grev. Scot. Crypt. PL 358. 



Mesobotrys Sacc. Mich. 2:27. 1880. 



Sporophores simply verticillate in the middle, the upper 

 portion sterile, simple or branched, fuscous; conidia solitary, 

 hyaline, ovoid or cylindrical. 



1 species is reported from the United States. 



18. GONYTRICHUM Nees. Act. Acad. Leop. 9:244. 1818. 

 Sporophores irregularly branched, fuscous; conidia solitary, 



simple, borne upon verticillate sterigmata (basidia) arising at 

 the nodes of the sporophores. 

 1 species reported. 



Tribe Dematieae (Fr.) 



Dematiei Fr. Syst. Myc. 3:335. 1832. 

 Haplograpkieae Sacc. Syi. Fung. 4:303. 1886. 



Vegetative hyphae creeping; sporophores erect or ascend- 

 ing, verticillately or irregularly branched, or simple, the 

 branches being reduced to mere denticulations at the apex, 

 hyaline or fuscous; conidia catenulate, simple, hyaline or fusc- 

 ous, catenulae acrogenous, single on the ultimate branches or 

 sterigmata (basidia). 



19. DEMATIUM Pers. Tent. Disp. Meth. Fung. 41. 1797. 

 Sporophores ascending, irregularly branched, fuscous; con- 

 idia simple, fuscous, globose or ovoid, catenulae scattered. 



3 species are reported from the United States. 



20. SCHIZOCEPHALUM Preuss. Linn. 25:77. 1852. 



Hormodendron Bon. Bot. Zeit. 1853:286. 1853. 

 Haplographium B. & Br. Ann. Mag. Nat. Hist. Ill no. 281 

 1859 p. p. 

 Sporophores erect, more or less verticillately branched at 

 the apex, fuscous; conidia fuscous, globose to oblong, caten- 

 ulae approximate. 

 As here limited, contains 3 North American species: 



SCHIZOCEPHALUM ATRO-BRUNNEUM (CKE.) 



Penicilliiim atro-hrunneum Cke. Grev. 6:139. 1878. 

 Haplographium atro-brunneum Sacc. Syl. Fung. 4: 305. 1886. 



SCHIZOCEPHALUM DIVARICATUM (ELL. & LANGL.) 



Hormodendron divaricalum Ell. & Langl. Journ. Myc. 6:35. 1890. 



SCHIZOCEPHALUM GRISEUM (ELL. & LANGL.) 



Haplographium griseum Ell. & Langl. Journ. Myc. 4: 124. 1888. 



