The Myoologic Flora of the Miami Valley, 0. 65 



Subgenus IV. — Tricholoma, Fr. 



Spores white (except in No. 27). Stipe fleshy, not corticate. H3'- 

 menophore confluent with the stipe, the lamellae sinuate behind. 

 All terrestrial. 



a. Pileus white or whitish, 24, 25. 



b. Pileus gray or violaceous, 26, 27. 



c. Pileus brown or blackish, 28, 29. 



a. Pileus white or whitish. 



24. A. sPERMATicus, PauL— White. Pileus somewhat fleshy, convex, 

 then explanate, obtuse, repand, glabrous, viscid. Stipe stufl'ed, then 

 hollow, elongated, twisted, even. Lamellae emarginate, rather distant, 

 eroded. Spores .0056 mm. long. 



In woods in autumn. Pileus about 3 in. in diameter, the stipe 3-4 

 in. long. The viscid pileus, shining when dry, and the twisted stipe 

 often tapering at the base, distinguish the species. I find it rather 

 scarce. 



25. A. LATERARius, Pcck. — Pilcus convex or expanded, pruinose, 

 whitish; the disk often tinged with red or brown; the thin margin 

 marked with slight, subdistant, short, radiating ridges. Stipe nearly 

 equal, solid, white. Lamellae narrow, crowded, white, prolonged in little 

 decurrent lines on the stem. Spores oval, .0046 mm. long. 



Around old rotten logs in woods. Pileus 2-4 in. broad, stipe 3-4 in. 

 high. The pinched up margin of the pileus is a convenient mark of 

 specific distinction. 



b. Pileus gray or violaceous. 



26. A. TERREUS, Schaeff. — Pileus fleshy, thin, soft, campanulate, then 

 expanded, umbonate, clothed with innate floccose or scaly down, mouse- 

 color. Stipe stuffed, nearly equal, appressed-fibrillose, whitish. 

 Lamellffi attached, decurrent by a tooth, crenulate, white-gray. Spores 

 somewhat elliptic, .0070X-0055 mm. 



In woods, solitary. Pileus 2-8 in. broad, stipe about :'. in. high. 

 Very scarce. The spores in my specimen are rather Inrger than in the 

 British plant where they are given as nearly spherical and .0050 ram. 

 long; yet the agreement is close otherwise. 



27. A. PERSON ATUS, Fr.— Piicus compact, then soft, convexo-plane^ 

 obtuse, regular, glabrous, moist. Stipe solid, obese, somewhat bulbous, 

 villous. Lamellae rotundate-free, close, violaceous then sordid. Spores 

 pale salmon color, regular, .006X-003 mm. 



