726 MINNESOTA BOTANICAL STUDIES. 



XLIV. A EE-ARRANGEMENT OF THE NORTH 

 AMERICAN HYPHOMYCETES. 



II. — ( Concluded.} 



Roscoe Pound and Frederic E. Clements. 



Dendryphium Wallr., which was omitted in Part I, has been 

 divided. The catenulate-spored section of which D. comosum 

 Wallr. is the type has been referred to Schizocephalum 

 Preuss (Minn. Bot. Stud. 9:666. 1896). Dendryphium Wallr. 

 has been retained for the section Bradnjcladium, of which 

 Dendryphium nodulosum Sacc. is the type. Thus constituted, 

 it is one of the Diplosporiaeae (1. c. 659). 



51. DENDRYPHIUM Wallr. Fl. Crypt. Germ. 2: 300. 1833. 

 Vegetative hyphae obsolete; sporophores erect, or ascending, 

 septate, swollen at the septa, the stout branches arising 

 pseudo - acrogenously from the swellings, fuscous; conidia 

 rarely or not at all catenulate, acrogenous, solitary, or 2 — 3- 

 clustered, oblong to f usoid - cylindrical, phragmosporous, 

 fuscous. 



Family STILBACEAE Fr. Syst. Myc. Introd. 1 :47. 1821. 

 Sterile hyphae obsolescent; fertile hyphae collected into a 

 dense, stipitoid stroma, hyaline or fuscous; conidiophores 

 either terminal, or lateral, forming a capitulum; spores glo- 

 bose to cylindrical, amero-dictyosporous, hyaline or fuscous. 



Subfamily Schaerocybeae. 

 Conidiophores terminal, i. e., apices of the fertile hyphae; 

 capitulum more or less globose, or turbiniform generally dis- 

 tinct from the stipe. 



Tribe Stilbeae Fr. Summa Veg. Scand. 2: 468. 1849. 

 Conidiophores simple, or sparingly branched; conidia sol- 

 itary. 



Subtribe Hyalostilbeae Sacc. Mich. 2:32. 1882. 

 Stroma hyaline, or bright- colored. 



