136 Thirty-eighth Report on the State Museum. 



The granules are so minute and so close that they form a sort of plush 

 on the pileus, more dense on the disk and radiatmg wrmkles than else- 

 where The clothing of the stem is finer, and has a velvety-pubescent 

 appearance, but in some instances it breaks up into small scales or squam- 

 ules. The color of the pileus and stem is usually some shade of 

 yellow or brown, but occasionally a grayish hue predommates. The 

 darker color of the granules imparts a dingy or smoky tmge to the gen- 

 eral color. The disk is often darker than the rest ot the pileus. 



Pluteus nanus, Pers. 

 Dwarf Agaric. Mealy Pluteus. 



Pileus somewhat fleshy, thin, convex or nearly plane, obtuse, rugulose, 

 pulverulent or dingij-pruinose, brown; lamellae close, ventricose, white 

 or yellowish, then flesh-colored ; stem equal, solid, firm, striate, gla- 

 brous, white or yellowish ; spores subglobose, .0002 to .00025 in. long. 



Plant about i inch high, pileus 6 to 12 lines broad, stem i line thick. 



Decaying wood and sticks. Not common nor abundant when it does 

 occur. July to September. n v. , 



The small size, dingy-mealy or pulverulent pileus and small subglo- 

 bose spores are characteristic of this species. Small specimens some- 

 times have the margin of the pileus slightly striate. Large specimens 

 may be distinguished from small forms of the preceding species by the 

 glabrous stem. The European variety lutescetis, which has the stem 

 and lamellae yellowish, has not yet been observed in our State. Agaru 

 cus pp'rhospermus, Bull, is given as a synonym 



Pluteus tomentosulus, Peck. 

 Woolly Agaric. 



Pileus thin, convex or nearly plane, subumbonate, minutely villose or 

 squamulose-tomentose, white ; lamellae rather broad, rounded behind, 

 crowded, 4vhite then flesh-colored ; stem equal, solid, striate, shghtly 

 pubescent or subtomeniose, white ; spores subglobose or broadly ellip- 

 tical, .00025 t.o . 00032 in. long, .00025 broad, generally containing a 

 single large nucleus. 



Plant 2 to 5 inches high, pileus i to 3 inches broad, stem 2 to 4 lines 



thick. . 



Decaying wood and prostrate trunks. Catskill mountains and Cxanse- 



voort. July and August. 



This rare but beautiful species appears to be the American analogue 

 of the European. P- pellitus, Pers., which differs in its silky pileus 

 and glabrous stem. The entire plant, when young, is pure white, but -■ 

 with advancing age the lamellae assume the usual pinkish hue and the 

 margin of the pileus is sometimes tinged with the same color. 



Pluteus sterilomarginatus, Peck. 



Sterile-margined Agaric. 



Pileus thin, broadly convex 01 expanded, with a minute close-pressed 

 tomentum, pinkish-white, the thin margin exiendmg beyond thelamellm; 

 lamellcX close, subventncose, minutely eroded on the edge, tapering 



