TREMELLACEAE 103 



Family 60. TREMELLACEAE 



6:760, 9:257, 11:142, 14:244. 16:215, 17:203 

 Pileus typically gelatinous and homogeneous, horny when dry, reviving when 

 wet, sometimes waxy or leathery but then with divided basidia ; hymenium typically 

 amphigenous or superior, smooth or somewhat convolute ; basidia globose to terete, 

 transversely or longitudinally divided, or in one subfamily merely terete-clavate 

 and furcate, 1-4-sterigmate ; spores globose to reniform and oblong, continuous 

 or septate, producing sporidioles on germination ; conidia often present with the 

 spores. Some gelatinous forms included in the following families on account of 

 the character of the hymenium seem to belong properly in this family. 



Subfamily Auriculariae 



Basidia transversely septate, elongate or fusoid 



I. Pileus, or at least the hymenium, gelatinous 

 1. Entire pileus gelatinous 



a. Pileus verruciform or effuse 



(1) Basidia mixed with paraphyses Mylittopsis 14:246 



(2) Basidia without paraphyses 



(a) Spores not producing sporidioles on germination 



Platygloea 6: 771 



(b) Spores producing sporidioles Helicogloea 11:145 



b. Pileus disciform, cupulate or columnar 



(1) Pileus erect, filiform, columnar Eucronartium 17:211 



(2) Pileus not columnar, disciform or cupulate 



(a) Basidia without sterigmata Auriculariella 6: 437 



(b) Basidia with sterigmata 



x. Basidia 2-sterigmate ; pileus applanate 



Phlebophora 16:215 

 y. Basidia 3-4-sterigmate ; pileus pezizoid 



fCollopezis 16:216 

 (Tjibodasia) 

 2. Pileus coriaceous or membranous, hymenium gelatinous 



a. Pileus coriaceous ; hymenium reticulate-costate 



Auricularia 6: 762 



b. Pileus membranous ; hymenium smooth or plicate 



Hirneola 6: 764 

 [I. Pileus waxy, crust-like or byssoid 



1. Pileus waxy or crust-like 



a. Pileus very minute, disciform, on a pedicel 



Pilacrella 14: 246 



b. Pileus membranous, incrusting Jola 14:24c 



2. Pileus byssoid 



a. Basidia without a sac near the base Stypinella 14:244 



b. Basidia with a sack near the base Saccoblastia 14:244 



Subfamily Tremellae 

 Basidia longitudinally 4-divided. or cruciate, globose or ovoid 

 I. Spores alone present, i. e., homosporous 



