THE FUNGI WHICH CAUSE PLANT DISEASE 417 



Sporophore more or less gelatinous 



throughout 1. Laschia. 



Sporophore leathery above, the pores 



gelatinous 2. Gloeoporus. 



Sporophore leathery, corky or punky, 

 never gelatinous. Pores minute and 

 rounded or large and angular 

 Sporophore resupinate, never shelv- 

 ing 3. Poria, p. 418. 



Sporophore normally pileate, only ac- 

 cidently resupinate 

 Pores usually small or medium sized, 

 and round 

 Substance of the pileus not con- 

 tinuing "between the pores 

 Sporophore at first fleshy, then 



hardening 4. Polyporus, p. 418. 



Sporophore from the first 

 leathery or spon©r usually 



annual.1 5. Polystictus, p. 426. 



Sporophore from the first more 

 or less corky or pimky, 



usually perennial 6. Femes, p. 428. 



Substance of the pileus continued 



between the pores 7. Trametes, p. 437. 



Pores usually large, hexagonal or 

 labyrinthifonn rarely bounded 

 by large plates 

 Pores hexagonal 

 Stipe lateral; pores elongate. ... 8. Favolus, p. 439. 



Sessile; pores regular 9. Hexagonia. 



Pores labyrinthine, or replaced by 

 plates 

 Sporophore sessile 

 Hymeniima labyrinthine, be- 

 coming irpiciform 10. Dsdalea, p. 439. 



Hymenium lamellate, not be- 

 coming irpiciform 11. Lenzites, p. 439. 



Sporophore stipitate, concentri- 

 cally furrowed 12. Cyclomyces. 



