MERULIUS. 189 



*** Margin determinate, effuso-reflexed. 



Merulius tremellosus. Schrad. 



Resupinate; margin becoming free and more or less 

 reflexed, usually radiato-dentate, gelatinoso-cartilaginous ; 

 hymenium variously rugose and porous ; whitish and sub- 

 translucent looking, becoming tinged brown in the centre ; 

 spores cylindrical, curved, about 4 x 1 p.. 



Merulius tremellosus, Schrad., Spic., p. 139 ; Stev., Fung., 

 p. 227. 



On wood. From 1-3 in. across, remaining pale when 

 growing in dark places. Margin sometimes tinged rose, 

 radiating when well developed. 



Merulius corium. Fr. (fig. 13, p. 184.) 



Resupinato-effused for 3-4 in. or often more, upper margin 

 usually free and reflexed ; pileus whitish, silky or tomentose, 

 substance thin, pliant; hymenium reticulato-porous, from 

 pale ochraceousto clear tan; spores oblong, 8-10 x 3-4 p.. 



Merulius corium, Fries, Elench., p. 58 ; Stev., Fung., p. 228. 



On trunks and branches. Very variable, but known by 

 the white, silky pileus and the reticulato-porous ochraceous 

 hymenium. The hymenium is sometimes tinged with lilac 

 or rose-colour. 



Pileus 2-3 in. long, or more, and often nearly as broad, 

 resupinate, byssoid at the margin when young, but after- 

 wards entire, and more or less free at the circumference. 

 Colour pale buff, in age somewhat reddish in the centre. 

 Substance very leathery, flexible, tough, varying in thick- 

 ness, but mostly rather thin. Hymenium minutely and 

 distinctly reticulated, the spaces between the reticulations 

 concave, irregular. (Grev.) 



Plant 2-3 in. broad ; sometimes completely effused, 

 with a white byssoid margin, or even the whole pileus is 

 regularly reflexed ; often imbricated ; white, pubescent and 

 zoned above, below pale buff or lilac, variously sinuato-rugose 

 or reticulato-porous ; very various in thickness, being some- 

 times a mere pellicle, while, on the contrary, individuals occur 

 as thick as Stereum liirsutum. I have seen it covering the 

 stump of a felled tree in the greatest profusion, imbricated 



