54 Thirty-first Report on the State Museum 



BOTRYCHIUM LANCEOLATUM Afigst. 



Pine Hill, Ulster county. 

 Agaricus radicatus Relh. 



Two forms of this species occur here, one with a rather stout smooth stem, 

 the other with a more slender stem covered with minute scurfy particles. 

 The former agrees with the description of the species, the latter does not. 

 This last is the most common form with us. 



Agaricus rugosodiscus Pk. 



This Agaric, when wounded, exudes a serum-like juice. It belongs to the 

 subgenus Collybia rather than to Omphalia, and should be placed near A. 

 suceosus. 



Agaricus laccatus Scop. 



This wonderfully variable species sometimes has the lamellae notched behind 

 precisely as in the subgenus Tricholoma. 



Agaricus h^matopus Pers. 



I find a non-caespitose form of this species with red-margined lamellae. 

 Its red juice', however, will serve to distinguish it and show its true relations. 



Agaricus sarcophyllus Pk. 



This species, which was discovered in 1869, and had not since been found 

 by me, reappeared this season in a pasture near Ticonderoga. It is very 

 rare. 



Agaricus arvensis Schceff. 



In an oat field. Ticonderoga. 



Agaricus serotinoides Pk. 



I am satisfied that this is a mere variety of A. serotinus, and should not be 

 kept distinct. It is probable also that A. perplexus Pk. is only an American 

 variety of A. sublateritius, from which it scarcely differs except in the color of 

 the lamellae. 



COPRINUS ANGULATUS Pk. 



The description of this species was drawn up from dried specimens, and is 

 therefore inaccurate. It is here revised. 



Pile us thin, campanulate or convex, rimose-sulcate, sub-fuscous, disk squa- 

 mose, with a few brownish sub-persistent verrucae ; lamellae narrow, close, free 

 stem equal or slightly tapering upward, hollow, white ; spores black, triangu- 

 lar-ovate, compressed, .0003S-0004' long, .0003' broad, .0002' thick. 



Cantharellus aurantiacus Fr. 



Center. A variety with the lamellae nearly white. 



Trogia Alni Pk. 



The spores are very minute, narrow, cylindrical, slightly curved, colorless, 

 .0002 '-.00025' long. 



POLYPORUS SCUTELLATUS ScllW. 



This species, as it occurs with us, is generally dimidiate, and more or less 

 ungulate. The pores are not distinctly rhomboidal in most cases, nor have I 

 seen them changed to a black color. In ungulate specimens they are elongated, 

 and, in length, much exceed the thickness of the hymenophorum. In the young 



