110 NEW YOKK STATE MUSEUM 



Cortinarius rimosus n. sp. 



Pileus fleshy, firm, convex or plane, glabrous, at first pale 

 grayish violaceous, then tinged with reddish-brown, the surface 

 cracking into appressed scales or becoming variously rimose, 

 flesh whitish ; lamellae rather broad, distant, subventricose, emar- 

 ginate, violaceous when young, becoming brownish- ochraceous 

 with age; stem equal or slightly thickened at the base, white 

 and silky with the white veil, tinged with violaceous within; 

 spores subelliptical, .0004 to .0005 in. long, .00024 to .00028 

 broad, usually containing a single large nucleus. 



Pileus 2 to 4 in . broad ; stem 1.5 to 8 in . long, 4 to 6 lines 

 thick. 



Grassy ground in open places in thin woods. Westport. 

 September. 



This species belongs to the subgenus Dermocybe. It is a 

 rather large and stout plant and remarkable for the tendency of 

 the epidermis to crack in areas. The thin margin is often split. 

 The species belongs to the same group as C caninus and 

 C. azureus, from both of which it differs in its rimose pileus and 

 distant lamellae. The color of the young pileus is suggestive of 

 that of Tricholoma jyei'sonatum. 



Gomphidius nigricans n. sp. 



Pileus convex or nearly plane, pale brownish-red, covered with 

 a tough gluten which becomes black in drying, flesh firm, 

 whitish; lamellae distant, decurrent, some of them forked, white 

 becoming smoky-brown, black in the dried plant; stem subequal, 

 longer than the diameter of the jDileus, glutinous, solid, at first 

 whitish especially at the top, soon blackish by the drying of the 

 gluten, whitish within, slightly tinged with red toward the base ; 

 spores oblong-fusoid, .0006 to .001 in. long, .00024 to .0003 broad. 



Pileus 1 to 2 in . broad ; stem 1.5 to 2 . 5 in . long, 2 to 4 lines 

 thick. 



Under pine trees. Westport. September. 



This species is easily known by the blackening gluten which 

 smears both pileus and stem and even forms a veil by which the 

 lamellae in the young plant are concealed. In the dried state 

 the whole plant is black. 



