MYCOLOGIA 
VoL. V January, 1913 No. i 
ILLUSTRATIONS OF FUNGI— XIII 
William A. Murrill 
The accompanying plate illustrates several species of boletes 
collected either near Bronx Park, New York City, or in the vicin- 
ity of Stockbridge, Massachusetts. These are fleshy fungi with 
tubes instead of gills, usually occurring on the ground in woods 
during late summer and autumn. They are difiicult to distin- 
guish, even in the fresh state, and when the large amount of water 
they contain is eliminated the dried specimens bear little resem- 
blance to the originals. 
Many of the best edible fungi in temperate regions belong to 
this group, and the dangers of being poisoned are relatively small. 
Species with bitter or otherwise objectionable taste should be 
avoided, and especially all plants having red or reddish tube- 
mouths. The sensitive bolete, which promptly turns blue when 
touched or broken, has also caused mild poisoning in some cases. 
Many species have not been thoroughly tested, however ; hence 
it is wise to eat sparingly of all such plants until well known. 
For a complete treatment of the Boletaceae known to occur in 
this country, the student is referred to North American Flora, 
volume 9, part 3, where the species are fully described and arranged 
under eleven genera with specific keys. 
Gyroporus castaneus (Bull.) Quel. 
Chestnut-colored Gyroporus 
Plate 80. Figure i. X i 
T Pileus convex to subexpanded, slightly depressed, gregarious, 
[Mycologia for November, 1912 (4: 289-349) was issued November 23, 1912] 
^ 1 
limkary 
NEW YORK 
BOTANICAL 
aAKi>BN< 
< 
