168 MYCOLOGICAL NOTES FOR 1920 
scabrous-walled hyphae and the clamp connections of D. hyalinus. 
I have not made, for D. deliquescens, an exhaustive search for 
clamp connections, but have failed to find them in the mounts 
I have made. Neither have I ever seen D. deliquescens assume 
the dark colors on drying, characteristic of the present species. 
6. STEREUM RADIATUM Peck 
The fourth Pennsylvania collection of this species was made 
in October 27, 1920, on coniferous boards in the greenhouse at 
State College. A fifth collection, made in the Ottawa Valley, 
Canada, by R. J. Blair in 1917, is in my herbarium. Three of 
these collections were taken from structural coniferous timbers, 
four of them being from 7suga canadensis. The specific iden- 
tity of the substratum of the fifth collection was not determined, 
except that it was recognized as a coniferous host. The first 
collection, made here in 1915, was determined by Dr. Burt. 
The species is one of the easiest of the stereums to recognize. 
The plants are almost entirely resupinate and the hymenium 
is in all collections a uniform cinnamon brown or Sudan brown, 
except that where the fresh specimens are wounded on the 
hymenium they immediately turn black and remain so on dry- 
ing. The hymenial surface is radiately lined with obtuse ribs 
in all cases. The pileus where developed is black on top in 
dried specimens and usually decidedly rugose. 
Spores have not been certainly seen; in one specimen, how- 
ever, small rounded hyaline spore-like bodies, 4—5 » in diameter, 
were present on the hymenium but were not seen attached to 
basidia. No cystidia are present. Sections of the hymenium 
sometimes become pea green in KOH solution. 
7. MERULIUS FUGAX Fr. 
This rare and interesting species was collected on a conif- 
erous board in the greenhouse at the Pennsylvania State College, 
on October 26, 1920. It is a bright colored species, my field 
notes recording a salmon buff color, varying to pinkish cinnamon 
for the hymenial surface, and with the margin considerably 
lighter. The specimen was rather young and the gyrose- 
plicate hymenium was developed only in the center of the fruc- 
tification. The plant is separable from the substratum when 
fresh but as soon as it becomes dry it adheres tightly, although 
the fructification is quite membranous in that condition. Micro- 
scopic examination of sections through it shows the character- 
