-,, THE AGARICACEAE OF MICHIGAN 



mbsulcate when old. GILLS free, close, rather broad, width almost 

 uniform, rounded behind, white then pale flesh color from spores, 

 edge pulverulent. STEM 3-5 cm. long, 2-3.5 mm. thick, equal, solid, 

 fibrous, innately striatulate, white, pulverulent. SPORES sub- 

 globose, 6-7x5 micr., slightly longer than wide, granular within, 

 smooth, pale flesh color. CYSTIDIA ventricose, cylindrical in 

 upper |Kin. 75-90 micr. long, not horned, apex broadly obtuse to 



pointed. 



Solitary. On rotten wood in moist places. Ann Arbor, South 



Haven. June-July. Infrequent. 



Peck describes the stem glabrous; our plants had a distinctly 

 pulverulent stem when fresh. The spores also did not seem to be 

 dented on one side as indicated by Peck. Nevertheless, the descrip- 

 tion lits closely in other respects. It differs from P. chrysophaeus 

 in the long striatums of the pileus ami the fibrous-solid stem; the 

 color, also, is not cinnamon. In age, the longitudinal fibres within 

 tin- stem loosen, so that it appears falsely fistulose. The larger 

 size ami truly free gills separate it from Leptonia seticeps, which 

 is long-striatulate on cap. 



Section HI. Surface of pileus glabrous; moist or hygrophanous. 



584. Pluteus admirabilis Pk. 



N. Y. State Mus. Rep. 24, 1872. 



PILEUS 1-2 cm. broad, thin, convex-campanula te then expanded,. 

 usually umbonate, glabrous, hygrophanous, rugose-reticulate, ochre- 

 yellow to luteous, brownish when young, striatulate on margin when 

 moist, subeven when dry. GILLS free, rounded behind, moderately 

 broad, ventricose. dose, whitish or yellowish then rosy-flesh color 

 from the spores. STEM 3-5 cm. long, 1-2 mm. thick, slender, equal, 

 subrigid, glabrous, stuffed then hollow, yellow, white-myceloid at 

 base. SPORES subglobose, 5.5-7x5-6 micr., smooth, rosy flesh 

 color in mass. TYSTIDIA ventricose, cylindrical in upper part, 

 rounded at apex, 55-65x18 micr., scattered, more abundant in the 

 interspaces, mote ovoid on the edge of the gills. 



Scattered or subgregarious. On logs and decayed wood, in mixed 

 conifer or frondose woods. Houghton, Munising, Marquette. New 

 Richmond, Ann Arbor. July, August and September. More fre- 

 quenl in hemlock woods of the northern part of the State. 



The surface of the pileus is composed of spheroid stalked cells 



