658 MINNESOTA BOTANICAL STUDIES. 



34. CAMPOS PORIUM Harkn. Bull. Cal. Acad. Sci. 1:— (17). 



1884. 



Vegetative hyphae obsolete; sporophores simple, erect, fusc- 

 ous; conidia acrogenous, solitary or in twos, pedicillate, 1 — 3- 

 ciliate at the apex, many-septate, cylindrical, fuscous. 



One species described. 



Blodgettia Wright. Trans. Ir. Acad. 28:25. 1881, is so evi- 

 dently a Phycomycete, that it seems improper to include it. 



Tribe Helicosporieae (Sacc.) 



Mucedineae Helicosporeae and Dematieae Helicosporeae Sacc. 

 Syl. Fung. 4:233 and 557. 1886. 



Vegetative hyphae present or obsolete; sporophore erect or 

 ascending, more rarely procumbent, typically micronemeous, 

 simple or branched, hyaline or fuscous; conidia elongate, more 

 or less filiform, uncinately curled or spirally coiled, many- 

 septate or at least guttulate, hyaline or fuscous. 



The Helicosporieae of North America have recently been 

 monographed by Morgan, whose arrangement is followed. The 

 separation of the hyaline from the dark colored forms, required 

 by the Saccardian arrangement which puts them in different 

 families, makes some change in generic limitation necessary in 

 a grouping in which that arbitrary distinction is not made 

 use of. 



35. HELICOM YCES Lk. Obs. Myc. 1 : 19. 1809. 



Helicosporium Nees. Syst. 68. 1816. 

 Helicopsis Karst. Rev. Myc. 11: 96. 1889. 



Vegetative hyphae present or obsolescent; sporophores short 

 or elongate, more or less branched, hyaline or fuscous; conidia 

 elongate filiform or linear, loosely uncinate-convolute, hygro- 

 scopic, hyaline or fuscous. 



Contains 18 species reported from the United States. The 

 following species reported from this country, not transferred 

 to this genus by Morgan, should be included: 



Helicomyces brcsneolus (B. & C) 



Helicosporium brunneolum B. & Q. Grev. 3:51. 1874. 

 Helicomyces cdrtisii (Berk.) 



Belicoma curtisii Berk. Grev. 3:106. 1875. 



Helicosporium curtisii Sacc. Syl. Fung. 4:560. 1886. 

 Helicomyces diplosporus (E. & E.) 



Helicosporium diplosporum E. & E. Proc. Acad. Phil. 1891 : 93. 1891. 



Helicomyces fasciculatus (B. & C.) 



H'licoma fasciculatum B. & C. Proc. Am. Acad. Arts & Sci 4: 118. 1858. 



Helicosporium fasciculatum SACC Syl. Funs. 4:560. 1886. 

 Helicomyces leptosporus (Sacc.) 



Helicosporium leptosporum Sacc Syl. Fung. 4:559. 1886. 



Helicosporium griseum B. & C. Grev. 3:51. 1874. not Bon. 1851. 



