EEPOET OF THE BOTANIST. 97 



Thin soil covering rocks. Summit of Haystack Mt., at an 

 altitude of about 5, 000 ft. Aug. 



Only three specimens were found. I have seen no other 

 Lactarius on the high summits of the Adirondacks. 



Maeasmius mustutus n. sp. 



Pileus membranaceous, convex, glabrous, striate- sulcate, 

 reddish-brown ; lamellse distant, subvenose, unequal, some- 

 times branched, white ; stem capillary, smooth, shining, 

 blackish-brown. 



Plant scarcely V high, pileus l"-2" broad. 



Fallen leaves in woods and swamps. Catskill Mts. and 

 Sandlake. July. 



This is a very small species, easily overlooked. The color 

 of the pileus approaches a vinous red. 



Maeasmius mustutissimus n. sp. 



Very minute ; pileus convex or expanded, pubescent, 

 white, sometimes nodding ; lamellse few, vein-like, scarcely 

 extending to the margin of the pileus ; stem capillary, 

 smooth or slightly hairy, blackish-brown, pellucid- white at 

 the top. 



Plant l"-3" high, the pileus scarcely broader than the 

 head of a pin. 



Fallen leaves in woods. Forestburgh. Sept. (Plate 2, 

 figs. 27 and 28). • 



This is the smallest species known to me. It is remark- 

 able for the pubescence of the pileus. In damp weather the 

 plant appears as if glandular-pubescent, minute drops of 

 moisture tipping the hairs. When young the stem is some- 

 times white nearly or quite to the base. The lamellse are 

 reduced to three or four vein-like elevations. 



PANTJS 0PERCULATU& B. & G. 



Dead branches of alders. Adirondack Mts. Aug. 



POLYPOETJS CUPULJLF0EMIS. B. & C. 



Dead branches. Poughkeepsie. W. R. Gerard. 



POLYPOEUS SQTJAMOSTJS Fr. 



Trunk of an elm tree. Albany. May. 



POLYPOEUS SPUMEUS Fr. 



Decaying trunks of trees. Adirondack Mts. Aug. 

 13 



