1920] 
BURT—THELEPHORACEAE OF NORTH AMERICA. XII 149 
of that of S. hirsutum, should render specimens of the former 
species easily distinguishable. All gatherings of S. sulphuratum 
which 1 have seen had already faded to the gray color of old, 
weathered S. hirsutum and in this condition are best distin- 
guished by not having underneath the hairy covering a thin 
hardened crust as the upper surface of the intermediate layer, 
nor a dense, somewhat golden zone on the upper border of the 
intermediate layer when sectional preparations are examined 
with the microscope. 
S. sulphuratum occurs also in Westphalia, Germany, appar- 
ently an isolated station, and has been confused there with 
Stereum ochroleucum Fries, a species of thicker and softer struc- 
ture having hyphae interwoven instead of densely and longitudi- 
nally arranged—for which reason Fries was doubtful about its 
being a true Stereum and published the species originally as a 
Corticium. Collections from Sweden and France communicated 
to me as cospecific with the Westphalian gatherings have the 
upper surface of the intermediate layers with a crust-like golden 
zone and are referable to S. hirsutum instead. 
Specimens examined: 
Exsiecati: Brinkmann, Westfálische Pilze, 49, under name of 
Stereum ochroleucum; Rick, Fungi Austro-Am., 260, under 
name of Stereum ochroleucum. 
Germany: Westphalia, Lengerich, W. Brinkmann, comm. by 
G. Bresadola, and in Brinkmann, Westfülische Pilze, 49. 
Georgia: Catoosa Springs, H. W. Ravenel (in Kew Herb. and in 
Curtis Herb., 1731). 
Florida: C.G. Lloyd, 2181. 
Alabama: Auburn, Ala. Biol. Surv., comm. by F. S. Earle; 
Montgomery, R. P. Burke, 4 (in Mo. Bot. Gard. Herb., 
22017). 
Mexico: Jalapa, W. A. € E. L. Murrill, 316, 343, comm. by 
Bot. Gard. Herb. (in Mo. Bot. Gard. Herb., 54438, 
55477). 
Cuba: C. Wright, 292, type (in Kew Herb.). 
Jamaica: Farr (in N. Y. Bot. Gard. Herb. and Mo. Bot. Gard. 
Herb., 56667); Cinchona, W. A. & E. L. Murrill, 480, 
n comm. by N. Y. Bot. Gard. Herb.; Morce's Gap, 
. A. & E. L. Murrill, 728, comm. by N. Y. Bot. Gard. 
