4 
Mycologia 
Hypholoma aggregatum Peck 
Clustered Hypholoma 
Plate 1 13. Figure 5. X 1 
Pileus thin, convex, densely cespitose, reaching 5 cm. broad ; 
surface dry, white or grayish, ornamented with a few appressed, 
pale-umbrinous or avellaneous, fibrillose scales; context soft, 
watery, thin, odorless, mild ; lamellae adnate or sinuate, rather 
crowded, whitish at first, at length dark-brown with a whitish 
edge ; spores ellipsoid, smooth, brown, 7 X 4 ; stipe long, equal, 
fibrillose, striate at the apex, hollow, reaching 6 cm. long and 
1 cm. thick. 
This is a rare species, found in rich soil in woods, and described 
from Alcove, New York, in 1893. It has been collected in the 
Garden once, and again in woods east of Bronx Park. H. 
silvestre is closely related. 
Claudopus nidulans (Pers.) Peck 
Nest-making Claudopus 
Plate 1 13. Figure 6. X 1 
Pileus sessile or narrowed to a very short stipe, reniform to 
circular, usually imbricate, reaching 5 cm. or more broad ; surface 
dry, tomentose or somewhat hirsute, bright-yellow, margin in- 
volute ; context slightly tough ; spores smooth, pink in mass, 6-7 n 
long. 
This beautiful species is widely distributed, occurring on dead 
logs in woods during autumn. It is the most important repre- 
sentative of the small genus Claudopus, which differs from 
Pleurotus in having rosy instead of white spores. The plants 
figured are small ones. 
New York Botanical Garden. 
