AGARICALES H 3 



12. Lamellae decurrent ; plant terrestrial. CANTHARELLUS. 

 ' Lamellae adnate ; plant parasitic on other Agarics. NYCTALIS. 



13. Lamellae normally toothed on their edges ; stem central, eccentric or 



lateral. LENTINUS. * 



Lamellae entire ; stems central. 14. 



stems lateral or wanting. 15. 



14. Lamellae simple ; pileus firm and dry. MARASMIUS. 



pileus somewhat gelatinous. HELIOMYCES. 



Lamellae branched. XEROTUS. 



15. Lamellae simple ; plant leathery. PANUS. * 

 Lamellae deeply splitting, villous. SCHIZOI'HYLLUM. 

 Lamellae channeled or crisped, smooth. TROGIA. 



(Pink-spored Series.) 



16. Volva present ; annulus wanting. VOLVARIA. 

 Volva wanting ; annulus present. ANNULARIA. 

 With neither volva nor annulus. 17. 



17. Lamellae free from the stem. PLUTEUS. 

 Lamellae adnate or sinuate ; stem fleshy. ENTOLOMA. 



stem with a cartilaginous rind. 1 8. 



Lamellae decurrent on the stem ; stem fleshy. CLITOPILUS. 



stem with a cartilaginous rind. EcciLlA. 



18. Pileus torn into scales. LEPTONIA. 

 Pileus papillose, subcampanulate. NOLANEA. 



(Rusty-spored Series.) 



19. Annulus continuous PilOLlOTA. 

 Annulus arachnoid, filamentous or evanescent, often not apparent in 



older specimens. 20. 



Annulus wanting. 2 1 . 



20. Lamellae adnate ; plants terrestrial. CORTINARIUS. 

 Lamellae decurrent ; plants mostly epipyhytal. FLAMMULA. 

 Lamellae deliquescent, almost separate from the stem. BOLBITIUS. 



21. Lamellae decurrent, easily separating; stem fleshy. PAXILLUS. 



stem with a cartilaginous rind. TUBARIA. 



Lamellae not decurrent ; stem fleshy. 22. 



stem with a cartilaginous rind. 23. 



* Some species of Lentinus with entire gills can scarcely be distinguished 

 from Panus ; some of the more fleshy forms of the latter are quite close to 

 some forms of Pleurottis ; Panus and Lentinus are sometimes united in 

 one genus, 



