POLYPOREI 20I 



with the least change of color would perhaps be the 

 wiser choice for the novice. 



Another species having this peculiar property of 

 " turning blue " even in a more marked degree, and 

 named, in consequence, the B. cyanescens, though 

 always heretofore considered poisonous, is now pro- 

 nounced by certain prominent mycoph- 

 Caution agists to be not only harmless but es- 

 advisable culent. It is still advisable, however, 

 to caution moderation in its use as 

 food, if only on the ground of idiosyncrasy. The 

 spores of this species are white, which, with the more 

 minute tube openings, form a sufficient discrimina- 

 tion from subtomentosus. The spores should be ob- 

 tained by a deposit on black or dark -colored paper. 

 The flesh is white also. Other blue-stain species, 

 such as B. aiveolatus (Plate 24), are still considered 

 with suspicion, presumably groundless. 



YELLOW-FLESHED BOLETUS 

 Boletus chrysenteron 



Among the toadstools which tradition would sure- 

 ly brand as poisonous on account of " bright color " is 

 the common species whose name heads this para- 

 graph, and which is illustrated in Plate 22, fig. 2. In 

 its various shapes it suggests the preceding varieties. 

 Its cap, however, is brownish red, often bright brick 

 red. Flesh almost lemon ■ yellow, stained red just be- 

 neath the cuticle, and not noticeably changeable on 

 fracture. Tube surface yellowish green, turning blue 

 or bluish green when bruised. Spores light brown. 

 Tubes rather large, angular, and unequal in shape of 



