200 CLAVIS AGARICINORUM. 



Margin at first involute 7. Colltbia. 



Margin at first straight 8. Mycena. 



* Plant tough, coriaceous, or woody, 

 f StLiu central. 



Gills simple 13. MARASAIIUS. 



Gills branched \Q. XEROTUS. 



f Stem lateral or wanting. 



Gills toothed 14. LENTINUS. 



Gills not toothed 15. PANUS. 



Gills channelled longitudinally, or crisped . 17. TROGIA. 



GUIs splitting longitudinally .... 18. SCIIIZOPHYLLUM. 



Gills anastomosing 19. LENZITES. 



II. Spores rosy or salmon-colour. — Ui/porhodii. 



* Without cartilaginous bark. 

 i" Hymenophorum free. 



X Withavolra 10. Volvakia. 



X Without a volva. 



With a ring 11. Cham.eota. 



Eingless 12. Pluteus. 



f Hymenophorum confluent. 

 X Stem central. 



Gills adnate or sinuate 13. Entoloma. 



Gills decurrent 14. Clitopilus. 



X Stem lateral or absent 15. Claudopus. 



* With cartilaginous bark. 



Gills decurrent 18. Eccilia. 



Gills not decurrent. 



Gills subdehquescent 3. BOLBITIUS. 



Pdeus torn into scales 16. Leptonia. 



Pileus papillose, subcampanulate. 



GUIs membranaceous, persistent .... 17. Nolanea. 

 III. Spores brown, sometimes reddish or yellowish-brown. ^Z'crmjwi. 



* Without cartilaginous bark, 

 t Stem central. 



\ With a ring. 



Eing continuous 19. Pholiota. 



Ring araclmoid, filamentous or evanescent. 



Gills adnate, terrestrial 4,. CORTINARIUS. 



Gills decurrent or acutely adnate, gene- 

 rally epiphytal 21. Flammula. 



X Without a ring. 



Gills adhering to the hymenophorum, and 



sinuate 20. Uebeloma. 



GUIs separating from the hymenophorum, 



and decm-rent 6. PAXILLUS. 



t Stem lateral or absent 22. CiiEPiDOTUS. 



