mass in cooking. Some species also have a viscid or slimy surface 

 to the cap, and this causes earth, sticks and leaves to adhere tena- 

 ciously to it. Ir is rhcreforc well to peel such caps hoforc cocjking 

 them. 



ANALYTICAL TABLE OF SPECIES OF BOLETUS. 



Cap viscid when moist, 1. 



Cap not viscid, 3. 



1. Stem luniug n collar, 2. 



1. Stem destitute of a collar, JJ. ijiaiiulatus, 



2. Stem dotted above the collar, Ji. luteus. 



2. Stem dotted both above and below the collar, 



B. .suhluteus. 

 3. Stem rouii'honed with prominent colored dots or 



scales, 4. 



3. Stem with no dots or scales, 5. 



4. Margin of the cap with adhering fragments 



of a nieudiranous veil, B. versipellis. 



^Fargin of the cap naked, B. scaher. 



5. Stem solid, B. edulis. 



5. Stem hollow, B. casfaneus. 



'J'he yellow-brown boletus. Boletus luteus, is one of our rarest 

 species. I have seen it in but one locality in New York. Its cap 

 is broadly convex or nearly flat, viscid when moist and of a pecu- 

 liar yellowisli-l)rown color, with a slight reddish tint and com- 

 monly varied with very obscure streaks or stains of a deeper hue. 

 The llesh is white, often tinged with yellow in old plants. The 

 mass of pores is at first concealed by the membranous veil, 

 wliich stretches from the stem to the margin of the cap; but 

 when this is ruptured by the expansion of the cap, they are seen 

 to he yellow, but with advancing age they assume dingy ochra- 

 ceous hues. The stem is shorter than the diameter of the ex- 

 panded cap, solid, and furnished with a membranous collar which 

 often seems to extend dowmwards on the stem somewhat like a 

 sheath. It is marked Mitli brown dots above the collar. It is 

 found under pine trees in autumn. 



"Edible and highly esteemed;" "its flesh is very tender;" it 

 is excellent," are some of the estimates made of this fungus by 

 European writers. 



The small yellowish boletus, Boletus ffuhhttevs, is a much more 

 conmion species, but one so closely related to the Yellow-bro^v^l 

 boletus that jiossibly it has often been mistaken for it. It differs 

 from it in having a more slender stem, which is marked with 

 brown or blackish dots both above and below the collar. The 



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