POLYPOREI. 



251 



pores extremely minute, angular; dissepiments extremely 

 tliin ; edge ragged. — Mug. Zool. and But. i. /. 2. /. 3. 



On old deal boards. Very rare. King's Cliffe. Some of 

 the patches are barren, and some at length become confluent. 



G7. P. medulla-panis, Fr. ; eflused, determinate, subun- 

 dulated, firm, smooth, Avhite ; circumference naked, immargi- 

 nate, composed almost entirely of middle-sized, rather long, 

 entire pores. 



On decaying wood. Not uncommon if Sow. t. 387. f. 7 

 be the plant of Fries, as it certainly is of Persoon. 



68. P. vitreus, Fr. ; efl'used, subundulatcd, indeterminate, 

 dirty- white, somewhat hyaline j mycelium thin, separable, 

 matted together into a mass like kid leather; pores very 

 small, round, long, obtuse, entire. 



On decayed wood. Rare. West of England, C. E. B. 



69. P. obducens, Fi'. ; effused, incrusting, innate, firm, 

 white, composed entirely of very small, crowded, equal pores, 

 distinctly stratose; annual strata pallid-tan. 



On rotten trunks. ISot common. Bristol, C. E. B. Not 

 to be confounded with resupinate P. connatus. 



70. P. vulgaris, Fr. ; widely effused, thin, dry, closely ad- 

 nate, even, white ; circumference soon smooth, entirely formed 

 of firm, crowded, nearly equal pores. (Plate 16, fig. 6.) 



On dead wood and fallen branches. Not uncommon. 

 Sometimes yellowish. 



71. P. molluscus, Fr. ; effused, thin, soft, Avliite ; circum- 

 ference byssoid, composed of radiating fibrils; pores central 

 or collected in patches, small, round, unequal and torn, turn- 

 ing pale.— ^o^^. t. 387. /. 9. 



On dead wood. Rare. Known by its radiating, byssoid 

 margin. I have found it, however, abundantly on larch, with 

 the margin sometimes radiating, sometimes abrupt. 



