[Vou. 3 
240 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
cystidia; basidia with 4 sterigmata; spores white in collection 
on slide, ovoid, minutely echinulate n" short erowded spines, 
spore body 3-5x 215-3l5p. 
Fructifications 8-10 em. long, "UP em. broad. 
On rotten wood and bark of both coniferous and frondose 
specles. Canada to North Carolina and westward to Wash- 
ington, and in Jamaiea. April to January. Common. 
Collections of this species have been placed by recent 
authors in the genera Corticium, Phlebia, and Odontia, as an 
anomalous species whieh has no relationship to the species 
proper of these genera. The affinities of this fungus are 
with the species of Hypochnus by habit, dry hypochnoid 
structure, form of hymenial surface, and form of spore. The 
species is best regarded as a hyaline-spored Hypochnus, 
which is naturally eonnected with the dark-spored members 
of this genus by the pale-spored H. echinosporus, H. zygodes- 
moides, ete. The existence of an authentic specimen of Hy- 
pochnus fumosus is unknown to the writer, but this fungus 
is so distinguished among the species of Thelephoraceae that 
the lack of such a specimen is not serious in this case. Romell 
and Bresadola regard this fungus as the H. fumosus of Fries. 
My own study of the large series of Seandinavian Thele- 
phoraceae received from Romell and Karsten leads me to 
the same conclusion. 
Specimens examined: 
Exsiecati: Ellis, N. Am. Fungi, 509; Ell. & Ev., Fungi Col. 
1018, in both under the name Odontia fusca. 
Sweden: Stockholm, L. Romell, 96. 
Austria-Hungary: Tatra Magna, V. Greschik, two collections, 
comm. by G. Bresadola. 
Canada: locality not stated, J. Macoun, 27; Lower St. Law- 
rence Valley, J. Macoun, 23. 
New Brunswick: Campobello, W. G. Farlow, 6. 
Ontario: Ottawa, J. Macoun, 24; Harraby, Lake Rosseau, 
E. T. € S. A. Harper, 744. 
British Columbia: near Salmo, J. R. Weir, 460, 528 (in Mo. 
Bot. Gard. Herb., 9207 and 22647 respectively). 
