MYCOLOGICAL NOTES 
C. G. LLOYD 
Page 923 
(No.519) growing on Quercus bark. 
Section 3. Hard, thick resupinate. Plants formerly referred to 
stereurn. A section usually shows the large basidia and spores 
plainly but is so filled with incrusting, granular natter that the 
shape of the paraphyses is difficult to make out,^ a natter of not 
much moment, however, for all appea: 
to be much alike* 
ALEURODISCUS DISCIFCRMIS (Pig,1674)Forming little, thick, 
adnate sporophores, the margin usually free and incurved. Color 
(dried) pale greyish, A section shows abundrnt spores, hyaline, smooth 
12 X 16, large basidia and filiform paraphyses are^readily seen. 
Well known in Europe as stereun disciforme, it is absent 
from the States, Cooke put it in Peniophora (where found in Saccardo) 
and grossly misfigured it as having metuloids which it has not any 
more than it has thyroid glands. Specimens, H* Bourdot and Victor 
Dupoin, France. 
ALEURODISCUS CANDIDUS (Fig. 1675).- Sporophores pure white, 
not easily 
thick, hard, scattered, resupinate* Spores subglcbose. 16 X 18, 
hyaline, smooth. Paraphyses so incrusted that they are 
seen* 
A frequent species in the States on bark of frondose trees. 
Similar in size and habits to Aleurodiscus disciforme of Europe which 
it replaces. There is a species in Europe, Aleurodiscus acerinus 
(Stereum acerinum of old) unknown to me, thct is evidently close 
to this species. 
ALEURODISCUS NIVOSUS (Fig. 1676).- Forming little, elongated, 
hard, cracked, thin, white, resupinate patches on the bark of the 
red cedar. Spores subglobose, hyaline, even, about 14-18 mic. 
There is probably not a red cedar tree from the Gulf to 
Canada that does not have its bark covered with splotches of this 
little,•white, 
adnate 
fungus that looks 
.me spots of whitewash, 
This 
Ilk 
for me is its best specific diagnosis. The “structure 1 ' I am unable 
to make out excepting I can see that Hohnel’s figure does not repre¬ 
sent anything at all in its section. 
ALEURODISCUS STRUMOSUS (Fig. 1677).- Forming small, yellow 
patches on bark in the American tropics. It is the only bright 
to make out 
a specimen 
yellow species known. Its microscopic features are hard 
and it has mostly passed as a Stereum. Leveille named 
from Colombia (s. Am.) that he saw in the Paris Museum Stereum vitel- 
linum. Saccardo, finding the name a duplicate, changed it to 
Stereum Mancianum in honor of an Italian who had no more to do with . 
it than Dr. Cook (the Arctic, not the mycological exploiter). 
Patouillard published that it was an Aleurodiscus (still retaining 
^ Dn-viv /^>s *1 + T-r<'ici the s a> "*0 
the Italian’s name) and Burt decided it w 
strunosum as the plant was well known in the Berkeley, n 
traditions. I have a nice specimen from N. L. T. Nel« 
Our figure does not 
to advantage. 
Stereun 
and American 
wxun, Florida 
cone out very well but yellow does not photograph 
ALEURODISCUS CRASSUS (Fig. 1678).- Sporophores large. 
an 
