MYCOLOGIA 
VoL. VII May, 1915 No. 3 
ILLUSTRATIONS OF FUNGI— XX 
William A. Murrill 
Most of the illustrations on the accompanying plate were drawn 
from specimens collected in or near the New York Botanical 
Garden. Two of them, figures 3 and 5, were copied from studies 
by Air. George E. Alorris. Clitocybe illiidens is distinctly poison- 
ous, but easily recognized ; Collybia platyphylla is edible, but of 
little importance as food. 
Clitocybe illudens (Schw.) Sacc. 
Deceiving Clitocybe. Jack-my-lantern 
Plate 158. Figure i. X i 
Pileus convex to plane or depressed, irregular, often umbonate, 
densely cespitose, 10-20 cm. broad; surface glabrous, saffron- 
yellow ; context thick, white or yellowish becoming sordid with 
age, the odor agreeable 'and the taste not characteristic ; lamel- 
lae broad, decurrent, saffron-yellow; spores abundant, globose, 
hyaline, 4-5 //. ; stipe long, firm, glabrous, concolorous, tapering 
toward the base of the cluster. 
This species is readily recognized by its large size and brilliant 
coloring. It occurs throughout the eastern United States from 
midsummer to autumn in large clusters about dying trunks and 
stumps of deciduous trees. On dark nights, these clusters and 
also pieces of dead wood containing the mycelium are usually 
conspicuously phosphorescent. The plant is distinctly poisonous, 
[Mycologia for March, 1915 (7: 57-114), was issued April 9, 1915.] 
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