Harper—Species of Hypholoma. 
1153 
Pl. LXXVII B is from a collection found at Devil’s Lake, 
Wisconsin and the large cluster in PI. LXXVII! grew on the 
ground in open woods at Heebish, Mich. Atkinson gives an 
extended description of Hypholoma lacrimiabundum in Mush¬ 
rooms, pp. 28—30 and figure 28. The usual brief description 
of the species is as follows: 
Pileus 1—3 inches broad, fleshy, convex or umbonate, ob¬ 
tuse, pileus squamose with tufted fibers, tufts dark fuscous with 
a tawny or yellowish tinge on a white background. Flesh 
whitish or tawny, Lamellae adnate or broadly sinuate, rounded 
when old, close, slightly ventricose, becoming dark purple and 
spotted with the blackish spores, often with drops of moisture 
on the edge. Stem 2—3 inches long, V 2 inch or less thick, hol¬ 
low, scaly like the pileus below the annulus, smooth or white 
pruinose above. Spokes almost black 5—6x8—10/*. Atkin¬ 
son gives 7—8x9—11/*. 
NOTE. Hypholoma rigidipes, Pk. N. Y. State Mus. Bull. 139, p. 24, 
PI. Ill fig. 1—6, is based on plants found growing among tall weeds in 
September. Dr. Peck in Bull. 150, says “This species is well marked 
by its gregarious modes of growth. In the ornamentation of the pileus 
it is related to Hypholoma lacrimabundum, but it differs in its mode 
of growth, smaller size, more slender rigid stem and larger apiculate 
spores.” Prof. It. A. Harper says “The type of Hypholoma rigidipes 
has rather narrow spores slightly apiculate and slightly rough, not ex¬ 
actly like the spores of Hypholoma rugocephalum.” It may belong to 
the following group. 
The Hypholoma Velutinum Gkoup. 
The spores are the most diagnostic character in this group. 
They are almost black in mass, broadly oval, slightly inequila¬ 
teral or irregular, apiculate at each end, rough or echinulate and 
not pellucid under the microscope, 6—7x8—11/*. 
Plants sent me by Dodge which he had referred to Hypholo¬ 
ma rugocephalum Atk. have exactly the same kind of spores 
and they are so described by Atkinson. According to Dodge 
the spores of authentic specimens of Hypholoma boughtoni Pk. 
are the same though Peck does not describe them as rough or 
echinulate. Furthermore Dr. Dodge examined the spores of 
Hypholoma velutinum Pers. in Massee’s collection at the Xew 
York Botanical Garden and found them the same. As described 
