No. 104.] 41 



Agaricus eutheles, B. & Br. 



Under pine trees. West Albany. Sept. In these specimens the 

 farinaceous odor attributed to the species was not observed, but the 

 other characters were present. 



Agaricus alnicola, Fr. 



At the base of alders and on birch stumps. Delraar. Sept. 



The American specimens have the bitter taste ascribed to the 

 European plant. The form found on birch stumps has the lamellse 

 rounded behind, while that found at the base of alders has them 

 adnate. The young plant has a noticeable annulus but it nearly or 

 quite disappears with age. 



Agaricus (Naucoria) elatior, n. sp. 



Pileus thin, at first conical or subcampanulate, then convex or 

 nearly plane, glabrous, slightly viscid and striatulate on the margin 

 when moist, livid or grayish-brown ; lamellae broad, ventricose, dis- 

 tant, whitish or livid, then dark-ferruginous, white on the edge; 

 stem elongated, slender, hollow, flexuous, slightly fibrillose, pallid ; 

 spores brownish-ferruginous, oblong-elliptical, .0007 to .0008 in. 

 long, .0003 to .0004 broad. 



Pileus 5 to 10 lines broad, stem 3 to 5 in. long, about 1 line 

 thick. 



In sphagnum. Karner. Sept. Related to A. scorjjioides. 



Cortinarius arenatus, Fr. 

 Sandy soil under pine trees. Dehnar. Sept. 

 A form with longer stem and subconical pileus sometimes occurs 

 in marshes among sphagnum. 



Hygrophorus pudorinus, Fr. 



Pine woods. Delmar. Sept. 



Our plant does not strictly agree with the description of the species 

 to which we have referred it. The color of the pileus is darker in the 

 center, where it is a brownish-red, but it fades toward the margin, 

 where it is nearly white. The stem is not conspicuously contracted 

 at the apex, but in other respects it agrees so well with the descrip- 

 tion of H. pudorinus that it seems to us to belong to that species. 



Russula crustosa, n. sp. 



Pileus at first convex, then nearly plane or centrally depressed, 

 slightly viscid when moist, striate on the margin, brownish-yellow, 

 greenish or subolivaceous, the cuticle cracking and forming small 

 spot-like areolae or pseudo-verrucse ; lamellas nearly entire, some of 

 them forked at the base, narrowed behind and nearly free, white ; 

 stem cylindrical, stuffed or hollow, white; spores white, subglobose, 

 .0003 to .00035 in. broad; flesh wliite, taste mild. 



Pileus 3 to 5 in. broad, stem 1 to 2.5 in. long, 6 to 12 lines thick. 



Rocky ground in thin woods. Day. July and Aug. 



[Assem. Doc. No. 104.] 6 • 



