MYCOLOGIA 
Vol. VI September, 1914 No. 5 
ILLUSTRATIONS OF FUNGI— XIX 
William A. Murrill 
The accompanying illustrations, 1 including the two halftone 
plates, were all made from specimens collected in and near New 
York City. Four of the species described are known to be edible, 
one of them, Agaricus arvensis, being an important edible species 
in many parts of Europe. 
Collybia radicata (Relh.) Quel. 
Rooting Collybia 
Plate 137. Figure i. X i 
Plate 138. Slightly reduced 
Pileus fleshy, thin, convex to nearly plane, 3-7 cm. broad ; sur- 
face smooth, viscid when moist, often radiate-rugose, grayish, 
grayish-brown, or umbrinous, the center usually darker; context 
white; lamellae white, broad, rather distant, adnexed; spores 
ellipsoid, hyaline, with a slight oblique apiculus at one end, 15-17 
X 10-12 /a; stipe long, with a very long root, slender, firm, gen- 
erally slightly tapering upward, stuffed, white above, concolorous 
or slightly paler below, 10-20 cm. long, 4-8 mm. thick. 
This common and widely distributed edible species may be 
looked for in open deciduous woods. In the vicinity of New York 
City, the typical form figured occurs most frequently about beech 
stumps and under beech trees, and the long rooting base of the 
i The colored plate to accompany this article was being made in England and 
has not yet come to hand. It will be distributed with the next number of 
Mycologia. 
[Mycologia for July, 1914 (6: 161-220), was issued July 14, 1914.] 
221 
