114 THE POLYPORACEAE OF WISCONSIN. 



are not clearly marked. The stipe is thick, irrgeular, excentric. The 

 pores large, irregular, shallow, decurrent. 



The plants grow on the ground usually in groups, often cespitose 

 and confluent. 



When dry the color becomes a dull seal-brown, the hymenium remain- 

 ing lighter. 



Syn. Scutiger radicatus (Schw.) Murr. ; 19, 30, p. 430. 



Polyporus squainosus (Huds) Fries (Plate XIV, fig. 51; Plate XV, 



fig. 51). 



Pileus generally very large (0.5 meter broad,) flabelliform, tough- 

 fleshy, ochracecous, with broad, appressed, dark colored scales ; stipe 

 excentric or lateral, thick, reticulated above, becoming black below; 

 pores thin, at first small, then angular and torn, pale. Spores ovate, 

 colorless, 12 by 15 microns. 



Not common. Localities : Madison, Oakland Park. The largest one 

 is laterally stiped and is about 23 cm. wide, 14 cm. long and not more 

 than 1 cm. thick. The stipe is about 4 cm. long and 3 cm. thick. Two 

 smaller specimens are nearly centrally stemmed, the pileus being some- 

 what depressed above. The stipes here are cespitose and longer than 

 in the large specimen about 4.5 cm. long and 1 cm. thick and are reti- 

 culated above. 



The color is pale ochraceous. The scales are dark-brown and radially 

 arranged. The margin is thin and curved down. The flesh is thin, 

 soft and white. 



The pores are angular, very shallow in the young specimens, not very 

 large. In the larger specimens the pores are deeper and look very 

 much like the pores in Favolus europaeus. At length they become torn, 

 the dissepiments being very thin. 



This species is easily recognized by the large dark-brown scales and 

 the very large angular pores which are usually decurrent on the short 

 thick stipe which is more or less reticulated. 



Syn. : Boletus Juglandis, Schaeff. ; 27, Taf . 101-102. 



Polyporus caudicinus (Scop) Murr.; 19, 31, p. 40. 



Polyporus ovinus (Schaeff.) Whit. (Plate XII, fig. 42.) 



Pilei very variable in form, compact but fragile, fleshy, when young 

 smooth, but soon scaly cracked, whitish. Stipe short and thick 2.5 to 

 3 cm. long, sometimes bulbous, unequal, white. Pores small, round, 

 equal, at first white then yellowish. 



Common at Standing Rock near Kilbourn, September 1910. 



