AGARICACEAE 



165 



Leucosporae 



5:8; K 247 



Spores hyaline, white or only very dilutely colored even in spore-prints, green 

 in a few species, globose to fusoid, smooth or rough. 



A. Edge of the gills split or revolute; pileus leath- 



ery; stipe none or lateral 



B. Edge of gills normal 



1. Pileus fleshy and putrescent, rarely reviving 

 when wet 



a. Edge of gills obtuse or gills fold-like 



(1) Gills decurrent, dichotomous, somewhat 



waxy 



(2) Gills not decurrent 



(a) Gills thick; pileus typically agaricole 



(b) Gills thin, vein-like; pileus not agaricole 



b. Edge of gills acute 



(1) Trama of pileus more or less vesiculose; 



spores globose or globoid, usually spiny 



(a) Gills with white or bright-colored milky 



sap 



(b) Gills without milky sap 



(2) Trama of pileus not vesiculose; spores 



typically smooth 

 (a) Gills more or less fleshy and separable 

 into two layers 

 X. Stipe excentric or none; pileus some- 

 times inverted 

 y. Stipe central or nearly so 

 (x) Hymenophore discrete from the 



fleshy stipe 

 m. Stipe volvate 

 (m) Stipe annulate 

 (n) Stipe not annulate 

 n. Stipe not volvate 

 (m) Stipe annulate 

 (n) Stipe not annulate 

 (y) Hymenophore homogeneous and 

 confluent with the fleshy or 

 fibrous-elastic stipe 

 m. Stipe annulate, without a volva 

 n. Stipe not annulate or volvate 

 (m) Gills sinuate or adnate, not de- 

 current 

 (n) Gills typically decurrent 

 (z) Hymenophore confluent with the 

 cartilaginous stipe but heterogene- 

 ous from it 

 m. Gills decurrent; cap umbilicate 

 n. Gills not decurrent 

 (m) Cap very thin, diaphanous, ephem- 

 eral, but not diffluent; typically 

 tropical 



Schizophyllum 5:654, K 253; M 



Cantharellus 5:482, K 248; 44 



Nyctalis 5:499, K 252 

 Arrhenia 5:498, K 248 



Lactarius 5:423, K 260 

 Russula 5:453, K 262 



Pleurotus 5:339, K 266 



Amanita 5:8, K 280; 44 

 Amanitopsis 5:20, K 283 



Lepiota 5:27, K 276; 44 

 Schulzeria 5:72, K 278 



Armillaria 5 :73, K 278 



Tricholoma 5:87, K 274; 44 

 Clitocybe 5:141, K 272 



Omphalia 5:308, K 267 



Hiatula 5:305, K 271 



