Parr 4, 1915] AGARICACEAE 237 
Tribe 3. AGARICEAE.* Hymenophore annual, putrescent or reviving, 
stipitate or sessile, terrestrial or epixylous, rarely parasitic on other fungi: 
context composed of slender, elongate cells, fleshy or membranous, sometimes 
rather tough; hymenium lamellate, fleshy or tough: spores variously colored: 
veil present or wanting: volva present or wanting. 
Spores white in mass, rarely tinged or becoming tinged with yellow, 
green, violet, or brown. Subtribe 1. LerroTanak. 
Spores rosy or rosy-ochraceous in mass. Subtribe 2. PLUTEANAE. 
Spores ochraceous, ferruginous, or fulvous in mass. Subtribe 3. PHOLIOTANAE. 
Spores brown, purplish-brown, or black in mass. Subtribe 4. AGARICANAE. 
Subtribe 1. LEPIOTANAE 
Hymenophore tough to woody, reviving. 2 
Lamellae split longitudinally. 12. ScHIzoPHYLLUS. 
Lamellae not split longitudinally. 
Stipe lateral or wanting, or at times very eccentric; pileus irregular. 
Veil absent. 
Pileus sessile, resupinate when young. 
Context homogeneous. 
Pileus membranous. 13. PLEUROTOPSIS. 
Pileus coriaceous. 14, ScyTInoTus. 
Context with the upper layer gelatinous. 15. RESUPINATUS. 
Piléus stipitate or dimidiate, not resupinate when young. ‘ 
Pileus membranous; stipe tubular.: 16. MARASMIELLUS. 
Pileus Heshy-tough to coriaceous; stipe when present solid. 17. PaNnELtus. 
Veil present, soon vanishing; pileus sessile. 18. TECTELLA. 
Stipe central or slightly eccentric, varying in a few species to strongly 
eccentric or even lateral; pileus usually regular. 
Stipe tubular, slender, with cartilaginous cortex. 
Pileus subgelatinous; stipe horny. 19, HELIOMYCES. 
Pileus membranous or somewhat fleshy. 
Pileus glabrous or nearly so. 
Stipe simple. 20. MARASMIUS. 
Stipe compound. 21. PoLyMARASMIUS. 
Pileus conspicuously hairy. 22. CRINIPELLIS. 
Stipe solid, thick, of uniform texture. 
‘Veil absent. 
Hymenophore solitary or gregarious, rarely cespitose; pileus 
“usually regular. 
Pileus thin, umbilicate or infundibuliform; lamellae 
decurrent. 23. LENTINUS. 
Pileus thick, convex; lamellae adnate. 24. LENTINULA. 
Hymenophore cespitose; pileus somewhat irregular. 25. LENTINELLUS. 
Veil present, though often evanescent. 
Hymenophore solitary to gregarious, slightly cespitose at 
times; surface scaly. 26. Lentrovium. 
Hymenophore densely cespitose; surface smooth. 27, LENTODIELLUM. 
Hymenophore fleshy or membranous, not He: (See page 297.) 
12. SCHIZOPHYLLUS Fries, Obs. Myc. 1: 103. 1815. 
Apus S. F. Gray, Nat. Arr. Brit. Pl. 1: 617. 1821. 
Pileus coriaceous, reviving, dimidiate; lamellae densely hirsute, the edges splitting longi- 
tudinally and the parts becoming:revolute: spores hyaline: stipe none, veil none. 
Type species, Agaricus alneus L. 
1. Schizophyllus alneus (L.) Schrot. Krypt.-F1. Schles. 
: 31: 553. 1889. 
Agaricus alneus L. Sp. PL. 1176. 1753. 
Agaricus multifidus Batsch, Elench. Fung. 173. 1783. 
Agaricus radiatus Sw. Prodr. 148. 1788. 
, Schizophyllus communis Fries, Obs. Myc. 1: 103. 1815. 
’ Schizophyllus umbrinus Berk. Jour. Bot. & Kew Misc. 3: 15. 
Schizophyllus fasciatus Pat. Jour. de Bot. 1: 170. 1887. 
Schizophyllus mexicanus Pat. Jour. de Bot. 1:171. 1887. 
Schizophyllus Murrayi Massee, Jour. Bot. 30: 164. 1892. 
Schizophyllus Egelingianus Ellis & Ev. Bull. Torrey Club 22: 439. 
Hyponevris alneus Earle, Bull. N. Y. Bot. Gard. 5: 412. 1909. 
1851. 
1895. 
*By Wi.L1AM ALPHONSO MURRILL. 
