158 



TREMELLALES 



b. Pileus corious 



(1) Basidia at first globose, then cylindric Septobasidium 11:118, K 107 



(2) Basidia clavate Patouillardina K 108 

 B. Hymenium with more or less complete and defi- 

 nite peridium 



1. Pileus from waxy to fleshy or gelatinous; spores 



hyaline Pilacrella 14:246, K 109 



2. Pileus becoming powdery; spores dark Pilacre 4:579, K 109 



Family 68. TREMELLACEAE 



6:780; K 111 



Characters of the order, but the basidia vertically or cruciately 2-4-divided, 

 sterigmata terminal, usually subulate; typically gelatinous or fleshy-waxy; an incom- 

 plete peridium present in one genus. 



A. Hymenium exposed, without peridium 



1. Basidia seriate, obliquely septate; pileus globoid, 



gelatinous 



2. Basidia not seriate, cruciately divided by 3 ver- 



tical septa 



a. Pileus with spines 



(1) Pileus crustose 



(2) Pileus more or less irregularly cap-shaped, 



often with lateral stalk; spines inferior 



b. Pileus without spines 



(1) Pileus byssoid 



(2) Pileus crustose, applanate or cupuloid, 



hymenium mostly smooth 



(a) Hymenium wrinkled or alveolate 



(b) Hymenium with setose papillae 



(c) Hymenium smooth 

 X. Pileus more or less cupuloid 



(x) Pileus hairy; spores obovate 

 (y) Pileus not hairy; spores cylindric, 

 often curved 

 y. Pileus applanate 

 (x) Pileus fleshy-gelatinous, mostly lilac- 

 red 

 (y) Pileus more or less waxy 

 m. Spores reniform; conidia ovoid 

 n. Spores ovoid to oblcjng, curved; co- 

 nidia hamate 



(3) Pileus thick-gelatinous, folded or ascend- 



ing, often convolute-funnelform 



(a) Pileus typically dark, often folded 

 X. Pileus papillose; spores reniform 

 y. Pileus not papillose; spores cylindric, 



curved 



(b) Pileus usually yellow to brown or red, 



convolute, foliose or funnelform 

 X. Spores hyaline 

 (x) Hymenium with gloeocystidia 

 (y) Hymenium without gloeocystidia 



Sirobasidium 14:248, K 111 



Protohydnum 14:251, K 118 

 Tremellodon 6:479, K 119; 42 

 Stypella 14:246, K 113 



Protomerulius 11:142, K 117 

 Heterochaete 14:247. K 113 



Gloeosoma K 115 

 Hirneolina 17:208, K 114; 41 



Tulasnella 14:234, K 114 

 Sebacina 6:540, K 113; 41 

 Exidiopsis 14:248, K 115 



Exidia 6:772, K 115; 41 

 Craterocolla 6:778, K 115 



Seismosarca 9:260, K 117 



