Ihe Mycologic Flora of the Miami Valley. -^ 3 



on the bark of the White Ash ; it resembles the following species, 

 except in color ; it may be the Polyporus cervimis of Persoon. This 

 may be the same as the Leiizites vialis, Peck, which grows so 

 abundantly on the Oak railroad ties, but they differ greatly in 

 color. 



6. T. -MOLLIS, Smfdt. Resupinate, determinate, woody-pallid, 

 at length brownish ; the margin at length revolute ; and the under- 

 side pubescent, umber. Pores ample, unequal and lacerate. 



On the bark of the dead branches of Sugar Maple, in the tops 

 of fallen trees. Discrete and separable from the matrix, although 

 .wholly resupinate, but the margin free all around and often involute 

 and clothed on the under side with spongy down. Pores very 

 large .42 mm, subrotund and elongated, flexuous. From an inch or 

 two in length or breadth, elongated to several inches or even a 

 foot. A very elegant species. My specimens are gray becoming 

 brownish, umber on the underside; they answer »vell to the desf:rip- 

 tion oi P. cervinus in Berkley's Outlines. 



Genus IV. IX^iDALEA, Pers. 



Pores firm, when fully grown sinuous and labyrinthi form : in 

 other respects wholly like Trametes. 



a. Piletis corky. 



I. D. AMBIGUA, Berk. White. Pileus corky, horizontal, ex- 

 planate, reniform, subsessile, azonate, finely pubescent, becoming 

 glabrous. Pores from round to linear and labyrinthiform,'the dis- 

 sepiments always obtuse and 'never lamellate. 



On old trunks of Sugar Maple ; common. It begins its growth 

 in Spring as round white nodules ; specimens gathered in Summer 

 are often thick and convex or gibbous; it finishes its growth along 

 in Autumn, when it has become flattened out, depressed above and 

 with a thin margin. I have indeed, however, specimens two years 

 old in which the growth of the first year is wholly inclosed by that 

 of the second year. There is sometimes a distinct round stipe as 

 much as half an inch in length and oblique to the pileus, but more 

 commonly the pileus is sessile by a somewhat circular base. When 

 fresh and growing it is of a rich cream color, with a soft velvety 

 feeling and a pleasant fragrance ; the color of the mature specimens 

 is well described by Berkeley as ^(frt'//^r)'///i', whitewashed; while older- 

 weathered specimens become wood colored and brownish. The 

 surface is usually quite smooth and even, not at all zonate, but 



