NATURAL HISTORY SURVEY 113 



On prostrate decaying trunks in (lamp woods. Also on decay- 

 ing trunks of old apple trees in orchards. The depressed or ir- 

 regularly funnel-shaped disk of the pileus in the mature plant is 

 often black, as is also the margin of the pileus. Lloyd, Myc. 

 Notes, No. 29, states that it is very near the European P. varius 

 Ft. He considers it the American form of that species. 



Polyporus radicatus Schw. 



Pileus fleshy-tough, pulvinate, depressed, sooty-pale, sub- 

 tomentose. 



Stem eccentric, long, tapering downward, rooting, black below; 

 pores somewhat decurrent, very Large, obtuse, equal, white. 



On the ground near stumps in woods; autumn. Margin of 

 pileus incurved; tlesh spongy-soft, unchangeable, white, taste 

 somewhat peppery. The stem is subtomentose when young, 

 subtomentose or somewhat scaly when old, often enlarged or 

 subbulbous near the surface of the ground. The radicating 

 portion of the stem is white within, occasionally fibrous-branched. 

 Spores pallid, 9 to 16 x 6 ju. A cespitose cluster of three plants 

 was found in woods at (den Ellyn, September, 1902. The pileus 

 in the largest of these was 17.5 cm. broad. The usual diameter 

 is 6 to 10 cm.; the stem (exclusive of the radicating portion which 

 is nearly as long), 5 to 10 cm., 12 to 10 mm. thick. P. Morgan i 

 Pk. is a synonym. According to Mr. Murrill, P. kansensis Ell. 

 and Barth. is the same species. 

 Polyporus sulphureus Bull. (Plate XIII, Plate XIV, Fig. 1.) 



Cespitose, multiple, moist, cheesy; pileoli very wide, imbri- 

 cated, undulate, smoothish, yellow with a tinge of red. 



Pores plane, sulphur-yellow with a tinge of red; spores moid, 

 papillate, 7 x 5 /*. 



At the base of stumps; summer and autumn. Growing in 

 dense, imbricated clusters, often forming a mass 2 or 3 dm. broad; 

 quite attractive on account of the varying tints of bright-ochra- 

 ceous, orange or salmon-red. It is one of the phosphorescent 

 species. Edible, but too tough to be desirable. It is soon 

 destroyed by larvae. It is given as Laetiporus speciosus (Batt.) 

 Murrill, in N. A. Fl. 9: 72. 

 Polyporus frondosus Dicks. (Plate XIV, Fig. 2.) 



Very much branched, fleshy-fibrous, somewhat tough, the 

 pileoli very numerous, fuliginous-gray, dimidiate, rugose, lobed, 

 intricately recurved; flesh white. 



Stems all united into a short trunk, white; pores small, acute, 

 white. 



Pileoli 1 to 2 cm. wide, the entire plant 1"> to 30 cm. broad. 



About stumps. Autumn. Not common. 

 Polyporus Berkeleyi Fr. 



Very much branched, fibrous, fleshy, a little tough; pileoli 

 very numerous, recurved and imbricate, fibrous-tomentose, 

 dusky-gray. 



