THE TUBE-BEARING FUNGI 



427 



which develops slowly. If the 

 same plant is observed in the 

 summer it will be found to be 

 gibbous or convex in form. It 

 finishes its growth in the fall 

 when it has become explanate 

 and horizontal, depressed above 

 and with a thin margin. When 

 fresh and growing it is of a rich 

 cream-color and has a soft and 

 velvety touch and a pleasant 

 fragrance. In Figure 355, show- 

 ing the surface of the cap, the 

 growth of the plant shows in 

 the form of the zones. Figure 

 356 shows the form of the 

 dissepiments. In younger speci- 

 mens these are frequently 

 round, much like a Polyporus. 

 There is one locality in Poke 

 Hollow where the maple logs 

 are white with this species, ap- 

 pearing, in the distance, to be 

 oyster mushrooms. 



Figure 355. Daedalea ambigua. One-third natural size, 

 showing upper surface. 



Figure 356. Daedalea ambigua. One-third natural size, 

 showing the pore surface. 



Dwdalea quercina. Pk. 



The; Oak Dafdalf,a. 



The pileus is a pallid wood 

 color, corky, rugulose, uneven, 

 without zones, becoming 

 smooth ; of the s,ame color within as without ; the margin in full-grown specimens 

 thin, but in imperfectly developed specimens swollen and blunt. 



The pores are at first round, then broken into contorted or gill-like labyrinthi- 

 form sinuses, with obtuse edges of the same color as the pileus, sometimes with 

 a slight shade of pink. 



They grow to be very large, from six to eight inches broad, being found 

 on oak stumps and logs, though not as common in Ohio as D. ambigua. The 

 specimen in Figure 357 were found in Massachusetts by Mrs. Blackford and 

 photographed here. . 



