Morrit_: PotyporacEAE 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 
fungus has also been collected in Colorado. 
5. FOMES FRAXINOPHILUS (Peck) Sacc. 
Polyporus fraxinophilus Peck, N. Y. State Mus. Rept. 35: 136. 
1882. 
tomes fraxinophilus Sacc. Sylloge, 6: 172. 1888. 
Ohio (Morgan, Gentry), Kentucky (Kellerman, Price), Mis- 
souri (Demetrio), 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. fraxineus (Bull.) Fr. by Cooke 
and some other mycologists. Anderson’s no. 537 in the Parasitic 
Fungi of Montana was distributed under the name of P. frarino- 
philus before it was.described as Homes Ellisianus. 
6. Fomes LicNeus (Berk.) Cooke 
Polyporus ligneus Berk. Ann. Nat. Hist. 3: 387. 18309. 
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. Ligneus. 
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; hymenium normally plane, but frequently convex 
because of the upturned margin, 5 x 10 x 3 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 
