June, 1911.] 
The Known Polyporaceae of Ohio. 
559 
33. Hexagona alveolaris (DC.) Murrill, Bull. Ton'. Club 31 : 327. 
1904. 
Merulius 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 : 48. 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 
30 : 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 generally umbilicate. 
Illustrations: Bull. Herb. Fr. pi. 469; Hard, p. 406, f. 335; 
Atk. Stud. Amer. Fung. f. 186. 
36. Polyporus arcularius (Batsch) Fries, Svst. Myc. 1 : 342. 1821. 
Boletus 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: Micheli, 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. 
