Harper—Species of Hypholoma , 
1163 
NOTE ON PHOLIOTA EREBIA Fr. 
(With Plate LXXXIV) 
Since publishing the photographs of Pholiota erebia in Part I, Plate 
XXX of this volume I have collected a number of plants closely con¬ 
nected with that species some of which are shown in Plate LXXXIV. 
Figures A-E are from specimens collected at Frankfort, Mich, in 
August 1913. They grew singly on the ground under beech and maple 
trees. They differ from the plants from Blue Mounds, Wis. shown in 
PI. XXX, in the scattered habit, less squamulose base of the stems 
and in the slightly shorter spores 5—6X9—11 /* instead of 6X12—14/*. 
They agree more closely than the others with the typical plants of 
Fries description the only noticeable difference is the less striate mar¬ 
gin of the pileus. The spore measurements also agree more closely 
with those given by Britzelmayr for Pholiota erebia, 4—6X10—12/*. 
The pileus was convex, subumbonate, slightly viscid, smooth, even or 
reticulated wrinkled, dark ferruginous brown when moist, becoming 
clay colored when dry, stem nearly equal, whitish, fibrous striate, veil 
apical, ample, membranous, Gills adnate, not crowded, grayish becom¬ 
ing rusty. 
The same plants were found also on logs of beech and maple. They 
often had the stems curved from position. The colors, characters and 
spore measurements were exactly the same as in the plants growing 
on the ground. Figure H shows one of these plants. Dr. W. S. Mof- 
fatt found similar plants on beech logs at Griswolda, Mich. He de¬ 
scribed the pileus as “honey color or pale tan, whitish on the margin” 
and gives the spore measurements as 4—5X8—9/*. These plants agree 
well with the description of Pholiota acericola Pk. N. Y. State Mus. 
Bull. 122 pp. 155-156. 
Figures F and G represent the plants found at Neebish, Mich, and 
mentioned in the previous article, p. 481 of these Transactions. They 
differ from both the Blue Mounds and Frankfort specimens in the 
more umbonate pileus, in the' distinctly striate margin of the pileus, 
in the rather more distant lamellae and in the distant annulus. The 
spores agree exactly in shape and size with those of the plants from 
Blue Mounds. 5—6X12—14/*. The distant annulus accords with the 
descriptions of Pholiota ombrophila. 
The Pholiota erebia group appears quite variable in Europe as well 
as in this country. I have already noted the caespitose forms with 
the base of the stems scaly and the forms with rugose wrinkled 
pileus both of which occur in this country. Britzelmayr illustrates 
a form which he considers a cross between Pholiota erebia and Pholiota 
togularis. He also describes several new species, Pholiota confoeder- 
ans, Pholiota praecavendus, Pholiota propinquatus etc. all of which 
are shown by their colors, characters and spore measurements to be 
very close to Pholiota erebia. His figures of Pholiota erebia are some¬ 
what larger and have thicker stems than the plants we have photo¬ 
graphed. It is however impossible to determine from the brief de¬ 
scriptions whether the variation in the group is similar to that among 
our plants. 
Edward T. Harper. 
