SOME COMMON MUSHROOMS AND HOW TO KNOW THEM 



47 



BOLETUS CHRYSEXTERON 



The cap is convex or plane, brown or brick red, more or less cracked, 

 subtomentose ; the flesh is yellow, red immediately beneath the cuticle, chang- 

 ing to slight blue where wounded ; the tubes are subadnate, yellow then 

 greenish, large, angular ; the stem is fibrous, striate, equal, red or yellowish. 



The cap is 1 to 3 inches broad ; the stem is 1 to 3 inches long. 



Authors differ concerning the edibility of this species; consequently extreme 

 caution should be used to avoid collecting it for Boletus bicolor, which is 

 edible. 



BOLETUS EDULIS. EDIBLE BOLETUS. (EDIBLE) 



(Fig. 42) 



The cap is convex to expanded, smooth, firm when young, becoming soft 

 in age, the color varying from grayish red to brownish red, generally paler 

 on the margin ; the flesh is white or yellowish, sometime* reddish beneath the 

 cuticle ; the tubes are 

 convex, nearly free, long, 

 minute, white, then yel- 

 low, and greenish; the 

 stem is variable in 

 length, straight or flex- 

 uous, equal or bulbous, 

 more or less reticulated, 

 w h i t i s h, pallid, o r 

 brownish. 



The cap is 4 to 6 

 inches broad; the stem 

 is 2 to 6 inches long. 



This is a species of 

 frequent occurrence and 

 the one of this genus 

 most commonly eaten. 



BOLETUS BICOLOR 

 (EDTBLE) 



The cap is convex, 

 glabrous, pruinose, dark 

 red, paler in age and 

 sometimes spotted with 

 yellow, firm ; the flesh is 

 yellow, sometimes chang- 

 ing to blue where 

 wounded ; the tubes are 

 nearly plane, adnate, 

 bright yellow, changing 

 to blue where wounded, 

 mouths small angular or 

 subrotund; the stem is 

 subequal, solid, red. 



The cap is 2 to 4 inches broad ; the stem is 1 to 3 inches long. 



This is a very attractive little species, occurring quite commonly in Virginia 

 and Maryland in the woods and on lawns in shady places. It is considered 

 one of the best edible species. 



Figure 42. — Boletui 



'dulii 



i Edible) 



STROBILOMYCES 



The genus Strobilomyces closely resembles Boletus, but it may be 

 distinguished by the less easily separable tubes and extremely scaly 

 cap and stem. 



