704 THE AGARICACEAE OF MICHIGAN 



Caespitose. On decayed charred log, probably hemlock, in mixed 

 woods of ravines. New Richmond. September. Rare. 



The plants from which Peck derived his description grew on the 

 ground under hemlock trees and in that situation formed a thick 

 fleshy mass from which the stems arose. Although our plants were 

 caespitosely united only at the base, and grew from a woody sub- 

 stratum. I have scarcely any doubt that they are the same. When 

 dried, the tap. gills and base of stem are ochraceous. In some ways 

 it approaches Pleurotus elongatipes Pk. but the stem is solid and 

 scarcely eccentric, and the pileus is spotted with watery marks. T. 

 conglooatus Fr. (Eddelbuttel, Ann. Mycol., Vol. 9, p. 512) differs in 

 its brownish-gray pileus and spores 0-7 x 5 micr., although Schroe- 

 ter (Die Pilze Schlesiens, p. G60) says the cap of that species is 

 often whitish. Our plants are very close to T. ooreale Fr., whose 

 snores, according to Massee (European fungus Flora) are the 

 same, but whose pileus is at first bright flesh color, then fades to 

 whitish. 



Section II. Spongiosa. Pileus fleshy, compact, becoming spongy, 

 obtuse, even, glabrous, moist. Neither hygrophanous nor viscid, 

 i Water soaked specimens sometimes become subgelatinous ; the 

 pileus in all cases absorbs water in wet weather.) 



742. Tricholoma album Fr. (Sense of Fries) (Unpalatable) 



Syst live, 1821. 



Illustrations : Fries, Icones, PI. 43. 

 Cooke, 111., PI. 65. 

 Berkeley, Outlines, PI. 4, Fig. G. 

 Patouillard, Tab. Analyt, No. G15. 



"PILEUS 6-10 cm. broad, convex then plane and depressed, not 

 umbonate, glabrous, dry, even, margin at first involute at length 

 repand, sometimes entirely white, sometimes yellowish especially 

 on the disk. FLESH tough, moderately thick, but not compact. 

 GILLS more or less emarginate, close, up to 8 mm. broad, white, 

 unchanging. STEM 6-10 cm. long, 8-12 mm. thick, attenuated up- 

 wards, solid, elastic, externally fibrous, glabrous, obsoletely prui- 

 nose at apex under lens, concolor. ODOR none; TASTE acrid, un- 

 pleasant." SPORES (Massee, Stevenson, Winter) elliptical, 5-6 x 

 2.5-3; (Romell) 0-7 x 4-4y 2 ; (Ricken) lanceolate, 7-8 x 3-3.5 micr. 



