1. On certain new or peculiar North American Hyphomycetes. II, Helicocephalum, Gonatorrhodiella, Desmidiospora nov. genera and Everhartia lignatilis n. sp Author(s): Thaxter, Roland, 1858-1932 author Publication: [Crawfordsville, Indiana?] : [publisher not identified], [1891?] Subject(s): Mitosporic FungiNorth America