MERULIUS. 185 



MEKULIUS. Hall. (fig. 13, p. 184.) 



Hymenophore resting on a loose mucedinous mycelium, 

 covered with the soft, continuous hymenium, having its 

 surface variously plicate or rugose, the folds forming irre- 

 gular pores, and sometimes obsoletely toothed ; spores colour- 

 less or coloured. 



Merulius, Hall, Helv. (emend.), p. 150 ; Stev., Fung., p. 

 227. 



Mostly growing on wood, at first soft and mucedinous, 

 when the hymenium is formed often subgelatinous. Eesu- 

 pinate or effuso-reflexed. Distinguished from Phlebia by 

 the irregularly porous hymenium, and from Poria by the 

 very shallow irregular pores and the soft consistency. 



FIGURES ILLUSTRATING THE POLYPOREAE. 



Fig. 1, Daedalea querdna, entire fungus ; much reduced ; Fig. 2, 

 Trametes gibbosa, entire fungus ; much reduced ; Fig. 3, section of same ; 

 much reduced; Fig. 4, Boletus luteus, entire fungus ; much reduced; 

 Fig. 5, section of same ; much reduced ; Fig. 6, Basidium with four 

 spores of same ; highly mag. : Fig. 7, Strobilomyces gtrobilaceus, spores 

 of: highly mag.; Fig. 8, Fistulina hepatica, group of plants; much 

 reduced ; Fig. 9, spores of same ; highly mag. ; Fig 10, section of same ; 

 much reduced ; Fig. 11, Poria medulla-pants, portion of a specimen; nat. 

 size ; Fig. 12, section of same, showing the exceedingly thin stratum of 

 flesh ; nat size ; Fig. 13, Merulius corium, two parts of plants, one 

 effused, with the upper margin free and reflexed ; the other resupinate, with 

 the margin free ; nat. size ; Fig. 14, Polyporus fumosus, illustrating the 

 dimidiate or imbricated, horizontal, laterally attached form ; nat. size ; 

 Fig. 15, section of same, showing the very short tubes : nat. size ; Fig. 16, 

 Polyporus perennis, illustrating the mesopod or central stemmed type, the 

 pileus is infundibuliform or funnel-shaped ; nat. size ; Fig. 17, section of 

 same ; nat. size ; Fig. 18, Polystictus vergicolor, showing the velvety, 

 zoned, upper surface of the pileus ; small specimen, nat. size ; Fig. 19, 

 portion of under or hymenial surface of same, showing the openings of the 

 minute pores; nat. size; Fig. 20, Forties igniarius, portion of a plant, 

 showing the thick, hoof-shaped, concentrically sulcate pileus ; the section 

 shows the stratified tubes, each stratum corresponding to one year's 

 growth; reduced ; Fig. 21, Poria Gordoniensis, showing the variable, 

 irregularly angular openings of the tubes ; enlarged. 



