1142 Wisconsin Academy of Sciences, Arts, and Letters. 
SPECIES OF HYPHOLOMA IN THE REGION OF THE 
GREAT LAKES. 
EDWARD T. HARPER. 
The genus Hypholoma is characterized by dark brown or 
purple brown spores, adnate or adnexed lamellae and an evi¬ 
dent appendiculate veil. Plates LXXII B, LXXVII A and 
LXXXII E show the nature of the veil. It tears away from 
the stem as the pilous expands and remains banging in patches 
from the margin of the pileus. In plants with a fibrous uni¬ 
versal veil like Hypboloma lacrimabundum, PL LXXVII C 
the veil scarcely differs from the cortina in Cortinarius. The 
veil is so- fragile that it soon disappears and can be seen to ad¬ 
vantage in young plants only. 
A glance through the photographs will show the general ap¬ 
pearance of plants in the genus. There is no common type as 
in Myeena or Omphalia and it is sometimes difficult to decide 
whether a plant belongs to this genus or not. Dr. Peck has 
changed several plants described as Hypholoma to Psilocybe. 
Hypboloma ornella he changed to Pholiota omella. Plants in 
which the veil varies to annulate are apt to be placed in the 
genus Stropharia. Attempts hitherto made to divide the genus 
do not avoid this difficulty. It would probably exist with any 
arrangement as there are few sharp dividing lines in nature. 
The genus is divided into five sections. 
I. Fascicularia. Pileus smooth, dry, bright colored. 
IT. Viscid a. Pileus viscid. 
III. Velutina. Pileus fibrous or scaly. 
IV. Flocculosa. Pileus covered with fioccose scales. 
V. Appendiculata. Pileus hygrophanous. 
