164 



AGARICALES 



(b) Pores hexagonal, large; pileus leathery 



to corky, mostly dimidiate 



(c) Pores elongate, the tubes lamelloid, 



sometimes passing into distinct 

 lamellae 

 X. Pileus resupinate; hymenium with fine 



forked parallel veins 

 y. Pileus dimidiate to cap-like and stipi- 

 tate 

 (x) Lamellae concentric 

 (y) Lamellae not concentric 

 m. Hymenium labyrinthine, the pores 

 multiform 

 (m) Pores with crowded cystidia 

 (n) Pores without cystidia 

 n. Hymenium radiately lamelloid or 

 lamellose 

 (m) Lamellae mostly continuous and 

 distinct; pileus typically dimid- 

 iate 

 (n) Lamellae forking regularly to 

 form elongate rhomboidal 

 pores; pileus mostly stipitate 

 B. Pileus fleshy, typically putrescent, rarely tough 



1. Pileus fleshy and putrescent; hymenium sepa- 



rable from hymenophore; tubes concrete 



a. Pileus fleshy-membranous, small and delicate; 



spores hyaline, cylindric 



b. Pileus fleshy, large; spores typically colored, 



globose to fusoid 



(1) Pileus and stipe beautifully squarrose- 



scaly; spores dark-brown, verrucose 



(2) Pileus and stipe not squarrose-scaly; 



spores smooth 



(a) Pores round or polygonal 



X. Hymenium separating readily from hy- 

 menophore 

 y. Hymenium not separating readily; 

 pores compound 



(b) Pores tortuose, labyrinthine 



(c) Pores lamelloid 



2. Pileus fleshy, becoming somewhat tough, spatu- 



late; hymenium not separable; tubes discrete 



Hexagonia 6:356, K 196 



Hymenogramme 5:652, K 200 



Cyclomyces 6:389, K 200; 45 



Elmerina 23:453, K 201 

 Daedalea 6:370, K 197; 43 



Lenzites 5:637; K 199 

 Favolus 6:390, K 200 



Filoboletus 16:142, K 209 



Strobilomyces 6:49, K 209; 43 



Boletus 6:2, K 205 



Boletinus 6:51 

 Gyrodon 6:51, K 209 

 Phylloporus 21:255, K 210 



Fistulina 6:54. K 203; 43 



Family 75. AGARICACEAE 



5:8; K 210 



Pileus typically cap-shaped and stipitate, occasionally excentric, lateral, dimid- 

 iate or inverted, fleshy to leathery, corky or woody, sometimes enclosed in a cap- 

 veil that persists at the base of the stipe as a volva; hymenium of radiating lamellae 

 or gills, rarely of ridges or veins, often protected by a gill-veil that usually remains 

 on the stipe as a ring, regularly inferior; gills covered with basidia bearing 

 typically 4 sterigmata and spores, sometimes with cystidia; spores typically 1-celled, 

 hyaline or variously colored. 



