Genus Lepiota 321 



8. Odor none; gills broad, subdistant; pileus 1.5-2.5 cm., floccosc- 



scaly, brownish, tinged with lilac; stem concolor below, 1.5-2.5 

 cm. X 2-4 mm.; spores 10 x 5 M L. subtilacea Pk. 



9. Spores minute, scarcely reaching 5 fx in length 10 



9. Spores 6 ^ or more in length 16 



10. Stem rufous-tinted, rufescent or rosy-tinted beneath the superficial 



fibrils or pulverulence 11 



10. Stem whitish, 2-3 cm. long, 1 mm. thick, glabrous; pileus oval to 



convex, obtuse, pink-tinged when young, granular-mealy; gills 

 subdistant; spores 4-5 x 3 M L. cristatatella Pk. 



11. Pileus 2-3.5 cm. broad 12 



11. Pileus averaging less than 2 cm 13 



12. Pileus white, disk rufescent, very minutely flocculose; gills rather 



broad; stem 4-6 cm. x 2-3 mm.; spores ovoid-oblong, 3.5-4.5 



X 3 M L. noscitntn Britz-Morgan 



12. Pileus bright rose color, densely granular, convex; gills at length 



ochraceous; flesh rufescent; stem 5-6 cm. x 3-5 mm.; spores 5 x 



3 M, elliptical L. rosea Rea 



13. Pileus and stem covered with mealy, white particles 14 



13. Pileus and stem glabrous; pileus 8-10 mm., white; stem 2-3 cm. 



X 1-2 mm., rufescent; gills broad; spores oblong, 4-5 x 2-3 M 



L. rufipes Morgan 



14. Pileus umbonate, 8-20 mm. broad; gills broad 15 



14. Pileus convex, obtuse, white or nearly so, 4-8 mm. broad; gills 



broad; spores elliptic-oblong, 4-5 x 2.5-3 M L. pusillomyces Pk. 



15. Pileus milk-white; spores 4 x 2 m L. hemisphaerica Murrill 



15. Pileus whitish, tinged flesh-color; spores 4 x 2 m (Rea); 4 x 2.5 /x 



(Lange); 5 M long (Quel.) L. seminuda (Lasch) Quel. 



16. Spores subglobose 17 



16. Spores ellipsoid; pileus between 1.5 cm. and 3 cm. broad 18 



17. Pileus incarnate-ochraceous, umbonate, with minute granular scales; 



stem granular, 2-3 cm. x 1-1.5 mm., equal; spores 5-7 fx diam- 

 eter L. repanda (Clements) Sacc. 



17. Pileus incarnate-ochraceous, with zone of blue on margin, umbo- 



nate, subfibrillose; stem scaly downwards, equal; spores 6-8 /x 

 diameter L. cyanozonata Longyear 



18. Gills white or whitish 19 



18. Gills lemon-yellow, edge serratulate; pileus lemon-yellow, with 



rufous scales, 1.5-2 cm.; stem concolor, 2-4 cm. x 2-4 mm., 

 scaly; spores 7-8 x 4 /i L. citrophylla B. & Br.-Boudier 



19. Pileus or scales becoming tinged with vinaceous, or with lilac, rosy 



or rufous colors ^^ 



19. Pileus or scales becoming tinged with yellowish or brown colors 24 



20. Odor none or slight ^'- 



20. Odor strong, of coal tar; pileus white becoming lilac-tinted, minutely 



mealy; stem 5-7 cm. x 3-5 mm. changing to deep lilac when 

 bruised; spores boat-shaped, 7-8 x 3 ju. . .L. Bucknallii B. & Br.-Rea 



21. Gills broad to very broad ^" 



21. Gills narrow; stem tapering upward 23 



