664 MINNESOTA BOTANICAL STUDIES. 



5. GONATOBOTRYUM Sacc. Mich. 2:24. 1880. 

 Sporophores simple, erect, fuscous, nodose-inflated; conidia 



clustered, ovoid to elliptical, fuscous. 

 1 species is reported from this country. 



6. ARTHROBOTRYS Cord a. Prachtfl. 43. 1839. 

 Sporophores erect, simple, hyaline, nodose inflated, the nodes 



verrucose; conida 1 septate, hyaline, ovoid. 

 • 1 species reported. 



7. SPONDYLOCLADIUM Mart. Flor. Crypt. Erlang. 355. 



1817. 



Sporophores erect, simple, rigid, fuscous; conidia 1 — many- 

 septate, verticillate- clustered at the septa of the sporophore, 

 fuscous, clavate-fusoid. 



Gonatorrhodiella Thaxt. Bot. Gaz. 16:202. 1891, in its mode 

 of conidia-formation closely resembles Gonatorrhodum. a Euro- 

 pean genus which is to be placed here. We know Gonatorrho- 

 diella only from Dr. Thaxter's figure and description. Judging 

 from them, we cannot forbear to think that the genus is related 

 to Aspergillus and its allies, and that its resemblance to the 

 forms here in question arises from proliferation of the vesi- 

 culae. 



Tribe Trichodermeae Fries. Syst. Myc. 3:203. 1829. 



Sporophores erect, irregularly branched, hyaline or light- 

 colored; conidia single, acrogenous, simple or one-septate. 



8. TRICHODERMA Pers. Tent. Disp. Meth. Fung. 12. 1797. 

 Vegetative hyphae decumbent, forming loosely compacted, 



plane cespituli; sporophores erect, loosely branched, commonly 

 dichotomous or trichotomous; conidia acrogenous, globose, 

 single, forming small heads. 



T. lignorian, the type is the conidial stage of Hypocrea rafa. 

 The other so-called species are doubtful, most of them having 

 been insufficiently characterized by the older mycologists. 



9. JACOBASCHELLA O. Kuntze. Rev. Gen PI. 1:280. 1891. 



Diplosporium Bon. Handb. 98. 1851, not Lk. 



Vegetative hyphae creeping; sporophores erect, irregularly 

 branched; conidia solitary acrogenous. one- septate, ovoid or 

 oblong. 



1 species is reported from the United States. Jacobaschella 

 brevis (Pk. ), Diplosporium breve Pk. Rep. N. Y. Mus.« 44: — (26). 

 1893. 



