'llic .Igaricaccac of Ohio. 473 



KEY TO THE GENERA. 



Spores wliile (sometimes }e!lo\v or ochraceous, lilac or pale 

 pink ; cinnal)ar-re(l in one species and green in another) 



Leucosporae (473) 

 Spores rosy, salmon-colored or rosy-rust-colored 



Rhodosporae (475) 

 Si:iores ochraceous, yellowish-hrown or brown-rust-colored 



Ochrosporae (476) 

 Sj)ures pnirple, pur])le-br<i\vn or black. .. Melanosporae (478) 



LEUCOSPORAE. 



A} Plants corky, tough, le'ithery or fleshy-leathery; persistent 

 or reviving when moistened. 

 P).^ Plants corky; hymeniuiu often porose at first, becoming 

 lamellate ; lamellae often branched and anastomosing. 



Lenzites (543) 

 J').- Plants not corky, lamellae never porose. 

 C.^ Edge of lamellae split into two laminae. 



Schizophyllum (543) 

 C.- Lamellae not as above. 



D.' Pileus differing from stipe in texture, or easily 

 separable from it. 

 E.^ Pileus gelatinous-leathery. 



Heliomyces (532) 

 E.- Pileus fleshy and tough or thin and 



leathery Marasmius (533) 



I).- SU])e, if i)resent, continuous with pileus, but 

 ma}- be aljsent. 

 I''.' ! amellae obtuse and fold-like. 



Trogia (543) 

 E.- Edge of lamellae acute. 



E.' Edge of lamellae serrate or notched. 



Lentinus (539) 

 P.- Edge normall}- entire. . .Panus (541) 



