MYCOLOGIA 
VoL. VIII July, 1916 No. 4 
ILLUSTRATIONS OF FUNGI— XXIV 
William A. Murrill 
The species figured on the accompanying plate all belong to the 
genus Lactaria, which has been monographed, so far as the North 
American species are concerned, by Dr. Gertrude S. Burlingham. 
The drawings were made by Miss Eaton from specimens col- 
lected in or near New York City. For descriptions of the five 
species of Lactaria previously figured in this series, see Myco- 
logia 3 : pi. 49, 6 : pi. 1^2, and 7 : pi. 160, 16^. The writer is in- 
debted to Dr. Burlingham for generous assistance with this article. 
Lactaria atroviridis Peck 
Dark-green Lactaria 
Plate 187. Figure i. X i 
Pileus fleshy, nearly plane, soon depressed at the center, 6-10 
cm. broad ; surface olivaceous, azonate, dry, scabrous-hairy, some- 
times cracking into small areas, margin involute, at length spread- 
ing to uplifted; context compact, white; latex white, staining the 
lamellae green after some time, acrid ; lamellae whitish, becoming 
mottled with green, especially where injured, sometimes forking 
near the stipe, crowded, adnate to slightly decurrent, rather nar- 
row; spores creamy-white, subglobose, echinulate, 7-8/1.; stipe 
colored like the pileus or paler, spotted, equal, dry, glabrous, firm, 
soon hollow, 2-5 cm. long, 1-2 cm. thick. 
Very rare in deciduous woods from New York to the District 
of Columbia. The specimens figured were collected by Dr. W. S. 
[Mycologia for May, 1916 (8: 121-190), was issued May 23, 1916.] 
191 
