Murrill: Polyporaceae of North America 229 



Morgan's description is based on a collection in Dakota by T. A. 

 Williams from the same host. His name refers to the half-en- 

 circling habit of the plant when it grows upon a branch. The 

 fundus has also been collected in Colorado. 



5. Fomes fraxinophilus (Peck) Sacc. 

 Polvponis fmxinopliilus Peck, N. Y. State Mus. Rept. 35 : 136. 



1882. 



FoiNCS fraxinop/iil lis Sdicc. SyWogQ, d : 172. 1888. 



Ohio (Morgan, Gentry), Kentucky (Kellerman, Price), Mis- 

 souri (Uemetrio), Kansas (Bartholomew), Nebraska (Bates), Penn- 

 sylvania (Martindale), Iowa (McBride), Indiana (Underwood), New 

 York (Peck). 



This species is confined to the ash, on which it is very com- 

 mon. It has been confused with P. fraxincns (Bull.) Fr. by Cooke 

 and some other mycologists. Anderson's no. 537 in the Parasitic 

 Fungi of Montana was distributed under the name oi P. fraxino- 

 pliilus before it was described as Fomcs Ellisianiis. 



6. P'^omes ligneus (Berk.) Cooke 

 Poly poms ligneus Berk. Ann. Nat. Hist. 3: 387. 1839. 

 Fomes ligneus Cooke, Grevillea, 13: 119. 1884. 

 Excellent specimens were collected in Nicaragua by C. L. 

 Smith and in St. Kitts by Britton and Cowell. Plants from Mau- 

 ritius at Kew bearing this name are specifically distinct from our 

 fungus. Fomes sulcatus Cooke from Demarara is nearly allied to 



F. lis'neus. 



7. Fomes stipitatus sp. nov, 



A plant of medium size with short evanescent lateral stipe, 

 shining reddish-chestnut crust and broad white thin margin. 

 Pileus exceedingly hard and horny, flat and triangular or some- 

 what circular when young, becoming dimidiate with ungulate 

 center and thin spreading margin, which is usually lobed and often 

 deeply cleft ; hymcnium normally plane, but frequently convex 

 because of the upturned margin, 5 x 10x3 cm.; surface glabrous, 

 varnished, reddish-chestnut, with numerous shallow concentric 

 furrows, becoming shining black and at length dull smoky-brown ; 

 margin broad, flat, glabrous, obtuse, 3 mm. thick, crenate to cleft, 

 sterile portion 0.5 cm. wide, white: context hard, woody, 0. 5-1 

 cm. thick, pale ochraceous, with strands of dark-brown shining 



