165— Note 20—MYCENASTRUM SPINULOSUM. 
The American plant which is common in some sections west of 
the Mississippi has been stated to be the same as Mycenastrum Corium, 
the original species, which 
Fig. 42. 
Mycenastrum spinulosum, showing columellae. 
occurs m Europe We 
think the plants are differ¬ 
ent. There is a slight 
difference in the spores and 
the American plant has 
distinct columellae not pre¬ 
sent in the other species 
The fact that there are ever 
columellae in Mycenastrum 
is unrecorded as far as we 
know. The division wall 
shown in Fig. 42 is not 
normal. The specimen sec¬ 
tioned was a ‘ ‘ double ’' 
specimen. 
166— Note 21—SCLERODERMA VULGARE VAR. 
VERRUCOSUM. 
We present herewith a cut of a 
plant made from an English specimen. 
We have received this same plant from 
Simon Davis, collected in the clear 
beach sand at Falmouth, Mass., but it 
must be rare in our country as we have 
never received the form from any 
one else. The more verrueose form 
without the strong rooting base (see 
Fig. 27), is very common in chestnut 
woods. We have been much puzzled 
over Scleroderma species and the con¬ 
clusions to which we are forced are 
not at all satisfactory to us. This 
plant should be called Scleroderma 
verrucosum and a new name given to 
our figure 88 without regard to old 
authors. 
Fig. 43. 
Scleroderma vulgare var. verrucosum. 
