June, 1911.] The Known Polyporaceac of Ohio. 559 



33. Hexagona alveolaris (DC.) .Murrill, Bull. Torr. Club 31 : 3.27, 



UH)4. 

 Merullus alveolaris DC. 



Also known as Favolus canadensis Klotzsch, and F. 

 europaeus Fr. This is the only species that we have in 

 which the pores radiate outward from the point of attach- 

 ment of the pileus. The color of the pileus is reddish brown, 

 due to radiating fibrils of that color. The fibrils disappear 

 with age and the pileus becomes pallid and glabrous. The 

 pores are large. The stipe is sometimes well developed, but 

 more often it is short or altogether wanting. When present 

 it is always lateral. The plant is common on dead decid- 

 uous wood, especially hickory, and is found from early 

 spring until winter. 



34. Hexagona striatula (Ellis & Ev.) Murrill, N. Am. Flora 



9 : 4S. 1907. 

 Favolus striatulus Ellis & Ev. 



Closely resembles H. alveolaris, but distinguished by its 

 smaller pores. On wood of the birch and the beech. Rare. 



35. Polyporus polyporus (Retz.) Murrill, Bull. Torr. Club 



3U : 33. 1904. 

 Boletus polyporus Retz. 



Known as P. brumalis (Pers.) Fr. A common and beau- 

 tiful species found in the fall, and often persisting far into 

 the winter. The pores are angular, somewhat resembling 

 those of Hexagona, and the pileus is generallv umbilicate. 



Illustrations: Bull. Herb. Fr. pi. 469; Hard, p. 406, f. 335; 

 Atk. vStud. Amer. Fung. f. 186. 



36. Polyporus arcularius (Batsch) Fries, Syst. Myc. 1 : 342. 1821. 

 Bolclus arcularius Batsch. 



This species is closely related to the preceding one, but 

 the pores are larger and more decurrent and the pileus is 

 less umbilicate. It occurs more abundantly in the spring 

 on all kinds of dead deciduous wood. 



Illustrations: Micheh, Nov. PI. Gen. pi. 70, f. 5; Hard, 

 p. 407, f. 336. 



37. Polyporus caudicinus (Scop.) Murrill, Jour. Myc. 9 : 89. 



1903. 

 Boletus caudicinus Scop. 



The same as Polyporus ulmi Paulet, and also P. squamosus 

 (Huds.) Fr. It is a large wound fungus found on elm and 

 maple trees. Not common. 



Illustrations: Schaeff. Fung. Bavar. 3: pis. 101, 102; Sow. 

 Engl. Fungi pi. 266; Bull. Herb. Fr. pis. 19, 114. 



