38 ON THE CLASSIFICATION OF FUNGI. 



able. Tmma between tubes, which is dissimilar from the flesh. 



(IM. VI. ficr. 3, 4.) 



IV. TRAMETES. Parasitic. Corky or woody. Sessile. 

 Dimidiate. Tubes concrete Avith Pileus, and the trama homo- 

 geneous with substance. (PI. VI. fig. 5, 6.) 



V. D.S]DALEA. Parasitic. Woody. Sessile. Trama con- 

 tinuous with substance. Tubes irregular, labyi'inthiform. (PI. 

 VII. fig. 4.) 



VI. MERULIUS. Parasitic. Structure expanded, resnpinate, 

 wa.\y. Tubes incomplete, no more than shallow, winding folds. 

 (PI. VII. fig. 1.) 



VII. POROTHELIUM. Parasitic. Eesupinate. Membrana- 

 ceous. Hymenium papillose, at length becoming obscurely 

 tubular. (PI. VII. fig. 3.) 



VIII. FISTULINA. Parasitic on oaks. Fleshy, juicy, soft, 

 and large. Sessile. Hymenium inferior, at first papillose, then 

 tubular. (PI. VII. fig. 2.) 



THE GENERA OF HYDNEI. 



To this Order belong seven Genera, distinguished as under. 

 (PI. VIII.) 



J. HYDNUM. Terrestrial and parasitic. Hymenium inferior, 

 covering awl-shaped Spines, which are distinct at the base. 

 Plant mostly fleshy. Central-stemmed, lobed, or branched. 



II. SISTOTREMA. Terrestrial. Spines irregular, somewhat 

 waxy, jagged, tooth- like, distinct and separable. Plant fleshy or 

 membranaceous. 



I IF. IRPEX. Parasitic. Tooth-like Spines, disposed in rows, 

 and concrcic with tlie Pileus. Plant corky, almost woody. 



IV. RADULUM. Parasitic. Hymenium covering waxy elon- 

 g'atcd IuImicIcs. 



V. PHLEBIA. Parasitic. Resnpinate. Soft. Gelatinous. 

 Hymenium spread over waxy, crest-like wrinkles. 



\'l. GRANDINIA. Parasitic. Soft, spreading, incrusting. 

 Hymenium covering waxy, rounded, crowded gi'anules. 



VII. ODONTIA. Parasitic. Fibrous mycelioid plants. Hy- 

 menium covering crested, papillose, or spiny warts. 



THE gi':nera of AURICULARINI. 



To this Order belong nine Genera, distinguished as follows. 

 (PI. IX., X.) 



