70 [Assembly 



5. Pileus white, spores globose C. malachius. 



5. Pileus yellowish, spores not globose C. croceitinctus. 



6. Pileus white, with a white villosity or tomentum 7 



6. Pileus with a colored villosity or tomentum 9 



7. Spores elliptical 8 



7. Spores globose C. putrigena. 



8. Spores less than .0003 in. long C. herhnrvm. 



8. Spores more than .0003 in. long C. mrs'/fi's. 



9. Pileus squamose with a tawny tomentum, spores elliptical. . G. fulootomentcsi/fi. 

 9. Pileus with a yellowish tomentum, spores globose C. dorsalu. 



Crepidotus haerens, Pk. 

 Sticky Agaric. 



Pileus thin, four to twelve lines broad, convex, sessile, cuneiform 

 or dimidiate, glabrous, or slightly squamulose, hygrophanous, viscid 

 and striatulate on the margin when moist, white or whitish when dry; 

 lamelhB moderately close, narrow, tapering toward each end, sub- 

 cinereous, then brownish; spores elhpfical, pale-ferruginous, .0003 in. 

 long, .0003 broad. 



Decaying wood. Albany. September. 



The elliptical spores and viscid pileus are the distinguishing charac- 

 ters of the species. I know of no other viscid Crepidotus. The pileus 

 is watery white or gray when moist, and white when dry, unless stained 

 by the spores. The margin is very thin and the pileus is attached to the 

 matrix by white filaments. The species is rare, having been observed 

 but once. 



Crepidotus haustellaris, Fr. 



Kidney-shaped Agaric. 



Pileus thin, four to ten lines broad, lateral or^ eccentric, reniform 

 or suborbicular, plane, moist, slightly tomentose when dry, alutaceous 

 or pale-ochraceous ; lamella broad, subdistant, rounded behind, 

 slightly adnexed or nearly free, pallid, then brownish-cinnamon; stem 

 sliort, distinct, solid, bulbous thickened at the base, Avhitened with a 

 shght tomentose villosity ; spores elliptical, .00035 to .0004 in. long, 

 .0003 broad. 



Dead bark of poplars. Thurman,AYarren county. October. Rare. 



Our specimens diflPer from the European plant in being smaller and 

 of a paler color. The pileus is also sometimes eccentric, though 

 Fries describes it as "exactly lateral" in the European plant. The 

 dimensions of the spores are taken from our specimens, no spore 

 characters being given in any description of the species to which we 

 have had access. Fries remarks that the species is "small, regular, 

 not csespitose, especially marked by the subconic stem and almost free 

 lamellae." 



Crepidotus tiliophilus, PJc. 

 Linden-loving Agaric. 

 Pileus moderately thin, six to twelve lines broad, convex, minutely 

 pulverulent, hygrophanous, watery-brown and striatulate on tlie 

 margin when moist, dingy-butf when dry ; lamella? rather broad, 

 subdistant, rounded behind, adnexed, colored like the pileus, becom- 

 ing ferruginous-cinnamon; stem two to four lines long, about one 

 line thick, solid, often curved, pruinose, with a white pubescence at 



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