36 THE CHICAGO ACADEMY OF SCIENCES 



Clitocybe illudens Schw. (Plate III, Fig. 1.) 



Pileus fleshy, convex or expanded, smooth, generally with a 

 small umbo, often irregular, bright golden or saffron yellow. 



Lamellae not crowded, unequally decurrent, some of them 

 branched, narrowed toward each end, concolorous with the pilous. 



Stem firm, solid, long, smooth, tapering at the base, colored 

 like the pileus. 



Spores globose, 4 to 5 p. Pileus 10 to 15 cm. broad; .stem 12 

 to 20 cm. long, 8 to 16 mm. thick. 



At the base of stumps. July to October. Frequent; often 

 growing in large clumps, conspicuous on account of the bright 

 color. Said to cause sickness, nausea and vomiting when eaten, 

 but is not dangerously poisonous. (For an account of the 

 poisonous properties see Rhodora, 1889, pp. 43 and 186.) 



Clitocybe monstrosa Sow. 



Pileus fleshy, at first convex and umbonate, at length waved 

 and lobed, opaque as if whitewashed, margin inflexed. 



Lamellae moderately distant, scarcely rounded behind, but not 

 truly decurrent, \\hite or cream-colored. 



Stem compressed, solid, streaked, opaque, white, tomentose- 

 squamulose above, slightly rooting. Often densely cespitose. 



On mushroom beds in a greenhouse, Chicago, April. Speci- 

 mens were brought to Dr. Watson by a gardener, who found the 

 plant growing as a "weed" in his greenhouses. They were 

 identified by Prof. Harper: The spawn used in the bods was im- 

 ported from England. 



Clitocybe infundibuliformis Schaeff. 



Pileus at first convex and umbonate, becoming infundibuli- 

 form, dry, flaccid, reddish or pale tan-color, fading with age. 



Lamellae decurrent, white. 



Stem generally tapering upward from* the base, colored like or 

 paler than the pileus. 



Spores somewhat elliptical, white, 5 to 6 /a. long. Pileus 5 to 

 7.5 cm. broad; stem 2.5 to 5 cm. long, 6 to 12 mm. thick. 



On the ground, also on dead sticks, twigs and leaves in woods. 

 August to October. Specimens collected at Highland Park after 

 a heavy rain, had the pileus white, changing to creamy-white as 

 the moisture disappeared. Pileus undulate in luxuriant plants, 

 sometimes lobed. The spores are often pip-shaped. 



Clitocybe laccata Scop. 



Pileus thin, fleshy, convex, sometimes expanded, even or 

 slightly umbilicate, smooth or minutely tomentose-scaly, hygro- 

 phanous, when moist dull reddish-yellow or reddish flesh-colored, 

 sometimes striatulate, when dry pallid or pale dull ochraceous. 



Lamellae broad, rather thick and distant, attached, not de- 

 current, flesh-colored. 



Stem slender, firm, fibrous, stuffed, equal, concolorous with 

 the pileus. 



