12 
Mycologia 
reduced. There is a series of other forms that were even more 
common on apple trees during the past season, which are brackets 
in form and are often placed one above the other and closely con- 
nected. A beautiful example of this type {PI. 175, f. 2) was 
found August 10 on a tree in the orchard near Robert Hill’s resi- 
dence, a few miles from Camp Columbia. In color, size of pores, 
zonation and consistency of flesh, I was unable to distinguish be- 
tween it and such a form of P. admirabilis as is shown in pi. jyj, 
/. j. The fact that the former is a shelving or bracketed punk, 
however, suggests that it must be an entirely different species. 
Further search has shown that many apple trees were infected 
this year with a form resembling this one. It is impossible to say 
what conclusion will be reached as to the number of species in- 
volved until a more extensive study of these apple tree fungi has 
been made. I have found similar punks in many old orchards in 
New York, New Jersey, and in several localities in Connecticut, 
and have a form collected by Professor Harper on a living apple 
tree at Bedford City, Va., September 16. These forms are much 
more abundant at Camp Columbia than P. admirabilis. Most 
commonly the base of the tree would be quite covered on one 
side with such punks as are shown in PI. 175, f. i. The heart- 
wood as the result of the attack is usually very spongy or entirely 
decayed. The fungi are so fragile that it is difficult to cut out 
the bark and sap-wood bearing them without shattering the punks. 
The upper surface in this particular type is soft and spongy, at 
first somewhat “ foamy ” in appearance. They are sometimes 
quite thin at the edge, thickening further back or even becoming 
hoof-shaped (PI. 175, f. i). The only difference between this 
form and the one found at Robert Hill’s appears to be the char- 
acter of the upper surface and the texture of the flesh. The pores 
are somewhat larger and the flesh thicker in the former. Both 
forms were observed for several days as they were growing and 
these differences were quite noticeable from the first. 
A somewhat different type was found by Mr. R. R. Stewart at 
New Rochelle, N. Y., September 21, and its pore surface is shown 
in PI. 775, /. 5. This single specimen was growing on a living 
apple tree about five or six feet from the ground. It is a thin. 
