68 NEW YORK STATE MUSEUM 



splitting or lobed on the thin spreading margin, glabrous, watery 

 white when moist, whitish or grayish white when dry, flesh watery 

 when moist, white when dry, taste mild, odor none; lamellae thin, 

 narrow, close, adnate or slightly decnrrent, whitish ; stem short, 

 equal or sometimes narrowed at the base, glabrous or merely prui- 

 nose, stuffed with a white soft or spongy center or hollow when old, 

 often curved or somewhat flexuous, white or whitish; spores sub- 

 globose, 4-5 X 3-4 fl. 



Pileus 2-4 cm broad ; stem 1-3 cm long, 2-4 mm thick. 



Gregarious. Lawns and grassy places. Albany, Ontario and 

 Saratoga counties. September to November. Rarely the pileus has 

 an obscure zone near the margin. 



This species was at first confused with Clitocybe deal- 

 bat a Sow. but after its sudorific property was discovered it was 

 designated Clitocybe dealbata sudorifica Pk. N. Y. 

 State Mus. Bui. 150, p. 43. Still further investigation leads me to 

 consider it worthy of specific distinction. Dr W. W. Ford has 

 found it sufficiently toxic to cause the death of frogs, rabbits and 

 guinea pigs, though it may be eaten by man in moderate quantity 

 with no more serious results than a profuse perspiration, sometimes 

 continuing five or six hours. It should be considered medicinal and 

 unwholesome and avoided as an article of food. 



Clitocybe truncicola Pk. 



TRUNK INHABITING CLITOCYBE 

 N. Y. State Mus. Rep't 26, p.S4 



Pileus thin, firm, expanded or slightly depressed in the center, 

 glabrous, dry, white ; lamellae close, thin, narrow, adnate or slightly 

 decurrent, white; stem slender, equal, stuffed or hollow, glabrous, 

 whitish, often curved and eccentric from the place of growth ; 

 spores broadly ellipsoid or subglobose, 4-5 x 3-4 fi. 



Pileus 1.5-2.5 cm broad; stem about 2.5 cm long, 2 mm thick. 



Trunks of deciduous trees, specially sugar maple. Adirondack 

 mountains. September. Rare except in the mountains. 



Clitocybe leptoloma Pk. 



THIN MARGIN CLITOCYBE 

 N. Y. State Mus. Rep't 32, p.26 

 Pileus thin, plane or infundibuliform, umbilicate, glabrous, creamy 

 white when moist, white when dry, very thin on the margin ; lamellae 



