92 THE CHICAGO ACADEMY OF SCIENCES 



On a manure pile, Wheaton, May, June, 1905. The stem is 

 stramineous without and within. The pileus is of a livid-yellowish 

 color becoming darker in drying. Spores ellipsoidal, 16 to 17 

 x 8 to 10 ft. Prof. Peck (Rep. N. Y. Mus. 23: 98), states that the 

 stem is " stuffed with a whitish pith." In bur specimens the pith 

 is brownish, darker than the inner surface of the stem. The stem 

 becomes fistulose at the base in large plants as they mature. 



HYPHOLOMA. 



Hymenophore continuous with the stem; veil woven into a 

 web which adheres to the margin of the pileus, often wanting in 

 old specimens; pileus more or less fleshy, the margin at first in- 

 curved; lamellae adnate or sinuate. Cespitose, growing chiefly on 

 wood, sometimes on the ground. Spores fuscous-brown or 

 fuscous-purple. 



Plant not hygrophanous 1 



Plant hygrophanous , 2 



1. Pileus smooth, tawny-brick-red H. sublateritium. 



1. Pileus innate-scaly, ochraceous or brown- 

 ish H. lachrymabundum 



2. Lamellae at first violaceous H. Candolleanum. 



2. Lamellae at first whitish H. appendiculatum. 



2. Lamellae at first watery-cinnamon. H. subaquilum. 

 Hypholoma sublateritium Schaeff. 



Pileus tawny brick-red, but paler around the margin and 

 covered over with a superficial, somewhat silky cloudiness, fleshy, 

 convex-plane, obtuse, discoid, dry, even, becoming smooth; 

 flesh compact, white, then becoming yellow. 



Lamellae adnate, more or less crowded, narrow, at first dingy- 

 yellowish and darker at the base, then fuliginous inclining to 

 olivaceous. 



Stem stuffed, stout and firm, commonly manifestly attenuated 

 downwards, rarely equal, scaly-fibrillose, fibrils pallid, ferrugi- 

 nous downward; veil superior, at first white, at length becoming 

 black. 



Pileus 2.5 to 7.5 cni. long; stem 5 to 10 cm. long, 4 to 8 mm. 

 thick; spores fuscous-purple, 7.5 x 4 /x. 



Cespitose and gregarious, about old stumps. October. 

 Some of our specimens can be referred with equal propriety to 

 Prof. Peck's H. perplexum. 



Hypholoma lachrymabundum Fr. (Plate XI, Fig. 1.) 



Pileus whitish when young, then dingy-brown, becoming pale 



around the margin, fleshy, scaly-hairy, the innate scales darker; 



flesh whitish. 



Lamellae adnate, crowded, whitish then fuscous-purple, the 



edge distilling drops in wet weather. 



Stem hollow, fibrillose-squamose, somewhat thickened at the 



base, becoming fuscous-whitish. Veil separate, fibrillose, ap- 



pendiculate. 



