[Vor. 7 
212 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
On logs and stumps of Tsuga, Abies, Picea, Taxodium, Pseu- 
dotsuga, and Larix. Canada to Texas and westward to British 
Columbia and Washington. May to November. Frequent. 
S. sulcatum may be recognized by its brown, deeply and sharp- 
ly and concentrically suleate pileus, ruddy hymenium, inerusted 
cystidia, and occurrence on conifers. Where the northern 
hemlock occurs it is usually on this species. S. Chailletii is 
found on conifers throughout the same northern geographical 
range, but is much thinner and does not have as large nor 
incrusted cystidia. In the older herbaria S. sulcatum is often 
found under the name Sterewm rugosum, to which specimens 
were erroneously referred. 
Specimens examined: 
Exsiccati: Ell. & Ev., N. Am. Fungi, 1935, under the name 
Stereum rugosum; Ell. & Ev., Fungi Col., 217, under the 
name S. rugosum. 
Canada: J. Macoun, 27, 32, 43; Lower St. Lawrence Valley, 
J. Macoun, 69a, 76. 
Ontario: Ottawa, J. Macoun, 234, and in Ell. & Ev., N. Am. 
Fungi, 1935. 
New Hampshire: North Conway, L. O. Overholts & H. H. York, 
comm. by L. O. Overholts, 5033 (in Mo. Bot. Gard. Herb., 
56350). 
New York: Floodwood, E. A. Burt, type; Ithaca, G. F. Atkin- 
son, 2028, 2617, 2636, 5072, 7889, 19398, and C. O. Smith, 
comm. by G. F. Atkinson, 8032; North Elba, C. H. Kauff- 
man, ? (in Mo. Bot. Gard. Herb., 21821); Pompey, L. M. 
Underwood, in Ell. & Ev., Fungi Col., 217. 
Louisiana: Lutcher, H. von Schrenk, 26 (in Mo. Bot. Gard. 
Herb., 42637). 
Texas: Houston, H. W. Ravenel, 113 (in U. S. Dept. Agr. Herb., 
under the herbarium name Stereum tricolor). 
Wisconsin: Ladysmith, C. J. Humphrey, 1908 (in Mo. Bot. 
Gard. Herb., 42917). 
West Virginia: comm. by W. G. Farlow. 
Tennessee: Elkmont, C. H. Kauffman, 60 (in Mo. Bot. Gard. 
Herb., 16403). 
Montana: Gallatin National Forest, Spring Hill, G. G. Hedgcock, 
comm. by C. J. Humphrey, 2164 (in Mo. Bot. Gard. Herb., 
10399). 
