1918] 
BURT—THELEPHORACEAE OF NORTH AMERICA. X 331 
hyphae of the upper surface of the pileus by a narrow, dark, 
dense zone; setae cylindric below, acute, 50-75X 8-10 y, 
emerging up to 50 y, starting from various parts of the dark 
subhymenial zone, abundant but not erowded; spores hyaline, 
even, somewhat curved, 4-6X 1-2 и, as seen in preparations 
of sections. 
Fructifications with pilei 4-7 mm. long, 4-10 mm. broad, 
sometimes laterally confluent; resupinate portions, when 
present, 3-2 24-74 em. 
On erect rotting stumps of frondose species—rarely on 
prostrate logs. Canada to Carolina. June to January. Oc- 
casional. 
This species is so closely related to H. tabacina that I have 
been doubtful whether it is not a form of the latter some- 
what modified in form of fructifications through growing on 
a vertical surface. H. badio-ferruginea may be separated 
from H. tabacina by growing upon a vertical surface and by 
the small imbricated, conchiform pilei which are thinner than 
those of H. tabacina, and by the hymenium either not at all 
cracked or with narrow cracks which do not form systems 
radiating from several centers in the resupinate portion— 
each system of cracks from its own center. The type of H. 
badio-ferruginea was collected in New York by Menand. All 
European specimens of H. tabacina which I have seen are 
distinct also from Н. badio-ferrugimea in the characters enum- 
erated above. 
Specimens examined: 
Canada: Bushwood, J. Macoun, 115. 
` New Brunswick: Tobique River, С. N. Hay. 
Maine: Piscataquis County, W. A. Murrill, 1941, 2232, 2246, 
2248 (in N. Y. Bot. Gard. Herb., and in Mo. Bot. Gard. 
Herb., 55515-55518); Penobscot County, W. A. Murrill, 
1807 (in N. Y. Bot. Gard. Herb., and in Mo. Bot. Gard. 
Herb., 55506). 
New Hampshire: P. Wilson (in N. Y. Bot. Gard. Herb., and 
in Mo. Bot. Gard. Herb., 55519); Camp, Ellis R., U. Ф C., 
from Underwood Coll., 8 (in N. Y. Bot. Gard. Herb., and in 
Mo. Bot. Gard. Herb., 55502); White Mts., U. £ C., 19, 
