324 C. H. Kauffman 



17. Edge of gills dark umber; scales of pileus small, umber-colored; 

 stem peronate up to the annulus, median; gills narrow; spores 

 6-7 X 4 /i ; among grass L. nigromarginata Massee 



17. Edge of gills concolor 18 



18. Gills flavescent at maturity; pileus mouse-gray at first, scales 



bistre-colored; annulus superior; stem with appressed, white 

 scales, later becoming bistre-colored; spores 6-7 x 3-4 ju 



L. scabinella Fr.-Rea 



18. Gills remaining white; pileus varying brown, purplish-brown to 



blackish-brown, at length squarrose-scaly ; annulus large; stem 

 fibrillose, thickened at base, 2-5 (6) mm. thick; spores 6-7.5 x 

 4-5 ^ L. felinoides Pk. 



19. Pileus very small, scales blackish-brown, 5-10 mm. broad; stem 1 



mm. thick, floccose-fibrillose; annulus conspicuous, under surface 

 blackish-brown; spores 6-7 x 4 /.i; in woods L. gracilis Pk. 



19. Pileus 2-3 cm. broad 20 



20. Pileus when young purplish-lilac, scales at length fuscous; annulus 



median; stem 2.5-3 mm. thick, its cortex rubellus; spores 4-5 



X 2-2.5 jj, L. lilacea Bres. 



20. Pileus with continuous cuticle, rarely subscaly, pale umber to dark 



brown; gills broad; all imrts tough; spores 4-5 xS fx 



L. neophana Morgan 



21, Pileus quite small, 5-20 (25) mm. broad 22 



21. Pileus 2-4 (5) cm. broad 24 



22. Stem soHd, growing from wood; pileus 10-15 mm. broad; with 



minute blackish scales; gills remote; annulus persistent; spores 

 5-6 X 3-3.5 fJL L. phaeosticta Morgan 



22. Stem hollow; not on wood 23 



23. Stem clavate, 5-7.5 cm. long, 3-6 mm. thick; pileus 1-2.5 cm. 



broad, whitish, tinged isabelline, fibrillose-pubescent; spores 6-7 



X 4 /i; in woods L. jimiperina Murrill 



23. Stem equal, 2.5 cm. long, 2 mm. thick; pileus 1-2 cm. broad, whit- 



ish, becoming rugulose, striate; gills narrow; spores 6-8 x 4-5 /jl 

 (Morgan) L. rugulosa Pk. 



24. Spores 5-6 (7) x 3 fi 25 



24. Spores 6-8 x 4-5 n; pileus subrimose, not scaly, gray or grayish- 



brown, disk purple-tinged; stem 4-5 cm. x 2-4 mm. subequal 



L. Glatfelteri Pk. 



25. Umbo of pileus conspicuous, black, scales deep flesh-color, margin 



striate; gills subdistant; stem 3-6 cm. x 2-5 mm., equal 



L. incarnata (Clements) Sacc. 



25. Umbo whitish, brownish or chestnut color 26 



26. Pileus white, rarely brownish on umbo, fibrillose-subscaly; stem 



slender, 2-4 mm. thick; annulus median L. miamensis Morgan 



26. Pileus covered with small, avellaneous to chestnut-colored scales; 

 stem 3-10 mm. thick, brown-tinted; annulus superior 



L. castaneidisca Murrill 



