I am indebted to Mary S. Whetstone, Minneapolis, Minn., for 
material that enables me to to definitely locate to my satisfaction the 
plant. When I collected it I did not procure a deposit of spores suffi¬ 
cient to enable me to feel sure of their color. Mrs. Whetstone has 
saved a good spore deposit for me and I find that the spores are al¬ 
most white, with a pale rosy tint, not deeper however than we find in 
the common species “sapidus,” which no one has essayed to take out 
of the “white-spored” species. At the same time the angular shape 
of the spores are anomalous in the genus Pleurotus and strongly indi¬ 
cate Entoloma. The raised reticulation of the pileus as shown in our 
illustration are sufficiently characteristic of the plant to enable anyone 
who may have met this form, to readily recognize it. All plants how¬ 
ever, do not have these peculiar reticulations, as is shown in the cross 
section which we present, and which grew in the same clump as the 
other, but the plant agreed with it in everything save in these reticu¬ 
lations. Prof. Morgan met and correctly determined the plant many 
years ago. Prof. Webster records it in the 8th Bulletin of the Boston 
Myc. Club, but we judge there it is a compilation rather than based on 
specimens he had met. Cooke’s illustration while much larger than 
we meet is evidently the same plant, but Sowerby’s plate (62) which 
is referred here by Fries and others, cannot possibly be our plant. 
Pleurotus tremens (Quelet Bull. Soc. Bot. France, 1877), seems to be 
very much the same with a lateral stipe. 
123—COLLYBIAS. 
Regarding the illustrations of Collybias in last issue of Myco- 
logical Notes, Prof. Bresadola writes : 
“Collybia lachnophylla, in my opinion a synonym for Agarieus 
coliaerens, and has nothing in common with Collybia acervata, which 
is a form of Marasmius erytliropus.” 
This leaves open the question what is the plant that both Prof. 
Peck and I have taken for C. acervata? Tet us hope to obtain further 
light on it' during the present season. 
“Your Collybia borealis is perhaps C. inolens of Europe.” — 
Bresadola. 
Carlton Rea, .secretary of the British Mycological Society, favors 
us with a very interesting note on C. butyracea. “Your photograph 
of C. butyracea does not suggest that plant to my mind as I know it, 
and it is a perfect pest with us in the autumn months. There is a 
soapy feel about the pileus which also occurs with Trieholoma sapona- 
ceum. Again the stem is cartilaginous and very spongy so that you 
can press it in and it will spring back in the same way as Clitocybe 
elavipes. It is stuffed with a few white fibrils and becomes hollow 
when old.” 
Myeological Notes are published without subeription price, and 
we are willing to send to all who are making a special study of fungi. 
If you will favor us with specimens of your “puff-balls” you will more 
than repay us. 
52 
