Pound and Clements: north American hyphomycetes. 663 



Ellisie.lla Sacc. which would be placed in the family Sporodes- 

 miaceae if retained, and would doubtless require a tribe by it- 

 self, does not seem sufficiently distinct from Golletotrichuvi in 

 the Melavconieae. 



Family MUCEDINACEAE (Lk.1 



Mucedines Lk. Berl. Mag. 3:10. 1809. (Obs. Myc. 1: 10.) 

 Sporophores entirely distinct from the conidia, well devel 

 oped, typically long and much branched. 



Tribe Trichothecieae. 



Vegetative hyphae creeping or obsolescent; sporophores 

 erect, simple, hyaline or fuscous; conidia acrogenous, solitary 

 or clustered, 1 — several septate, hyaline, the- diameter much 

 greater than that of the sporophore; saprogenous. 



1. TRICHOTHECIUM Lk. Obs. 1:16. 1809. 

 Sporophores erect, simple, hyaline; conidia solitary, 1-sep- 

 tate, hyaline or bright-colored, ovate to ellipsoid. 

 4 species are reported from the United States. 



2 DACTYLELLA Grove. Journ. Bot. 22:199. 1884. 

 Sporophores erect, simple, hyaline: conidia solitary, 2 — 

 many-septate, hyaline, fusoid to cylindrical. 

 D. ellipsospora (Preuss) Grove has recently been reported. 



3. DACTVLARIA Sacc Mich. 2:20. 1880. 



* Sporophores erect, simple, hyaline; conidia acrogenous, 

 clustered, 2 — many- septate, hyaline, clavate to cylindrical. 



2 species are reported from the United States. 



4. CORD AN A Preuss. Linn. 24:129. 1851, not Sacc. Syl. 



Fung. 4:195. 1886. 

 Acrothecium Preuss. Linn. 24:129. 1851, not Cohda. 

 Sporophores erect, simple, fuscous; conida acrogenous, clust- 

 ered, 2 — many septate, sub-hyaline or fuscous, oblong to cylin- 

 drical. 



3 species are reported from this country. 



Tribe Arthrobotrytae Corda. Prachtfl. 43. 1839. 

 Gonatobotryteae Sacc. Syl. Fung. 4: 168. 1886. 

 Vegetative hyphae creeping; sporophores erect, typically 

 simple; conidia borne upon the more or less swollen, denticu- 

 late nodes .and usually also upon an apical swelling, simple, 

 clustered, hyaline or fuscous. 



