186 IOWA ACADEMY OF SCIENCES. 



P. zonatus Fr. Olin (Hess) . 

 P. 2)ergamenus Fr. Ames (Hess and Vandivert). 

 P. velutinus Fr. Ames (Hess and Vandivert). 

 Trametes cinnabar ina Fr. Ames (Hess and Vandivert, Per- 

 rin, Carver, Pammel). 



T. picJdi Fr. Ames (Hess). 



T. olivensis Berk. Ames (Hess and Vandivert). 



T. lanatus Fr. Ames (Hess and Vandivert). 



HYDNACE^. 



Eydnum coralloides Scop. Ames (Hess and Vandivert). 

 Irjyex sinuosus Fr. Ames (Pammel). 



CLAVARIACE^. 



Physalacria inflata Pk. Ames (Hess and Vandivert). 



THELEPHORAC^. 



Stereum fasciatum Schm. Ames (Hess and Vandivert). 



Corticium oakesii Ames (Hume). 



Thelephora cladonia Schw. Ames (Hess and Vandivert). 



TREMELLACE^. 



Hirneola auricula-judaea (L) Berk. Ames (Hume). 



GUEPINIA BIFORMIS PECK. 



Pileus stipitate, cupulate and erect when young, becoming 

 curved to one side with age and often unilaterally split to the 

 base and lobed on the margin, tough and gelatinous when moist, 

 tapering below into the stem, minutely tomentose or velvety, 

 grayish buff; hymenium glabrous, reddish-brown or raisin color, 

 even or marked with radiating folds or ridges; stem distinct or 

 sometimes seriately confluent at the base, terete or compressed, 

 tough, velvety tomentose, grayish buff; spores oblong, color- 

 less, often curved, continuous or obscurely one-to three-septate 

 ten to fifteen it long, 6 to 7.5 broad. 



Pileus 6 to 12 mm. broad; stem 4 to 10 mm. long, 2 to 4 thick. 

 Decaying wood of deciduous trees. Ames, Iowa, September, 

 1899. Miss Alice Hess. 



Since this paper has been prepared the description has been 

 published in Bull. Torrey Bot. Club, 27:20. 



