Pound and Clements : north anerican hyphomycetes. 731 



the Tuberculariaceae from the Hyphomycetes, making them co- 

 ordinate with the latter group and the Melanconieae. But this 

 does not relieve the difficulty of separating Tuberculariaceae 

 from Melanconieae and both from some Sphaeropsideae. And 

 the close relation of Stilbum, which needs only to shorten its 

 stipe to become one of the Knyarieae, precludes drawing too 

 great a line between Stilbaceae and Tuberculariaceae. 



Significant also is the paralellism between some genera and 

 genera clearly Melanconieous, as, for example, between Sphaer- 

 idinm and Trullula and Blennoria. 



Perhaps eventually portions of the Tuberculariaceae, some 

 Excipulaceae, and some Nectrioideae, will have to be united 

 with the Melanconieae to form a new group. But this will be 

 far from satisfactory. 



The Tuberculariaceae for the most part represent conidial 

 forms of Hypocreaceae. Trichoderma in the Mucedinaceae is 

 at once suggested by this fact as well as by its morphological 

 similarity. Fusisporium, a sub- genus of Fusarium, might be 

 placed as well in the Trichodermeae, and was long kept separate 

 from Fusarium. But, under varying conditions, the same 

 fungus has been found taking on the Fusarium form or the 

 Fusisporium form, or both successively. 



We have removed, not without doubt, Palellina, and have 

 retained Epicoccum, Epiclinium and Trimmaiostroma. 



Tribe Kuyarieae Pound & Clements. 

 Sporodochia not setose or ciliate, sporophores simple or 

 branched, never verticillate, conidia single, that is, not caten- 

 ulate. 



1. KNYARIA O. Kuntze. Rev. Gen. PI. 2:855. 1891. 



Tubercular' ia Tode. Fung. Mecklenb. 1:18. 1790, not Tubercu- 

 ZariaWioo. Prim. Fl. Holsat. 87. 1780. 



Sporodochia wart-like, sessile or subsessile, waxy, usually 

 reddish; conidia acrogenous or acro-pleurogenous, elliptical or 

 oblong, continuous. 



The sporodochium consists of a mass of simple or branched 

 conidiophores arising from a pseudoparenchymatous layer, 

 and expanded somewhat above. The conidia form a waxy 

 layer covering the surface. The species are largely conidial 

 forms of Xectria. Several of the remaining genera of this tribe 

 might well be united with Knyaria, the principal distinction 

 being in the shape of the sporodochia. 



