450 THE FUNGI WHICH CAUSE PLANT DISEASE 



Volva absent; acmulus present 14. Annularia. 



Volva and annulus both wanting 



Gills free from the stipe 15. Pluteus, p. 45 1 . 



Gills adnate or sinuate 



Stipe fleshy 16. Entoloma. 



Stipe with a cartilaginous rind 



Pileus torn into scales 17. Leptonia. 



Pileus papillose, subcampanulate . 18. Nolanea. 

 Gills decurrent on the stipe 



Stipe fleshy 19. Clitopilus. 



Stipe with a cartilaginous rind 20. Eccilia. 



Leucospores (White-spored series) 



Stipe lateral, or none , 21. Pleurotus, p. 454. 



Stipe central 



Volva and annulus both present 22. Amanita. 



Volva present; annulus none 23. Amantiopsis. 



Volva absent; annulus present 



Gills free from the stipe 24. Lepotia. 



Gills united to the stipe 



Pileus usually smooth 25. Annillaria, p. 455. 



Pileus floccose 26. Costinellus. 



Volva and annulus both absent 

 Gills decurrent on the stipe 



Stipe fleshy 27. Clitocybe, p. 457. 



Stipe with a cartilaginous rind 28. Omphalia. 



Gills adnate, stipe with a cartilaginous 



rind 29. Collybia, p. 458. 



Gills sinuate 



Stipe fleshy 30. Tricholoma, p. 460. 



Stipe with a cartilaginous rind 

 Pileus membranous, more or less 



striate 31. Mycena, p. 460. 



Pileus very thin, without a pelli- 

 cle 32. Hiatula. 



Hypholoma Fries (p. 449) 



Fleshy; gills attached; annulus imperfect, or none; veil breaking 

 up into fragments which are more or less persistent on the margin 

 of the cap. 



About seventy species. 



