30 NATURAL HISTORY BULLETIN. 



h. Stipe at base not black. 



25. PoLYPORUs ARCULARius {^BatscJi) Frics. 



Pileus coriaceous, tough, convex, sub-umbilicate, azonate^ 

 brown scaly at first, then glabrous, yellowish the margin 

 strigose; stipe short, slightly squamulose, brownish; pores- 

 oblong, thin, entire whitish, pretty large; spores 3x8, 



Lignatile. not rare in early summer in wooded regions, easy 

 to recognize by the depressed pileus. thin context and large 

 rhomboidal pores at tirst whitish then on drying yellowish. 



26. PoLYPORUs cupuLiFORMis Berkeley and Cooke. 



Pileus cupuliform, at length reflexed, rufous, tomentose: 

 stipe very short; pores very small concolorous. 



Found at Decorah. ]Mr. Holway. A yery peculiar form, 

 only about 2 mm in width, on a stalk no longer, dull brown 

 in color, said to whiten with age. On bark of Carpiuus 

 americaniis. 



27. PoLYPORUs BRUMALis {^Pcvsoon) Fvies. 



Pileus from fleshy-tough becoming coriaceous, subumbili- 

 cate, azonate, sooty, yillous, thin, squamulose then glabrate, 

 fading; stipe thin, hirsute, squamulose; pores oblong, angu- 

 late, thin, acute, denticulate, white; spores 2x6. 



Rather common about stumps in pasture fields. At first 

 peculiarh- dark brown, yillous. then fading it becomes almost 

 glabrate. The small eyen pores meanwhile change from 

 white to yellowish. Diameter 2-5 cm. Height 2 cm. N. A. 

 F. 914. 



28. PoLYPORUS SUBSERICEUS Pcck. 



Pileus coriaceous, sub-umbilicate silky-shining with soft 

 appressed ferruginous radiating fibers; stipe slender concolor- 

 ous, tomentose; pores small, concolorous, angular. 



On the ground in the woods. Specimens from the same 

 locality yary so much in size, habit, as of growing together,, 

 color, size of pores, that we have been unable to separate this 

 from P. par villus Klotsch. 



[to be contixled.] 



