SECTION LIGNOSUS. 



Fig. 422 



Lignosus dealbatus. 



Fig 423 



Lignosus corriiKis. 



species has been badly confused (see page 190). It was originally 

 collected by Ravenel in South Carolina and Curtis also found it in 

 North Carolina, but I think no specimens exist except these original 

 types. It is found in Saccardo (page 159) as Fomes and also (page 

 218) as Polystictus, and it is neither. 



PANSUS. Pileus rugulose, with a dull surface, strongly zoned 

 with brown and darker zones. Stipe mesopodal with a mat, dull sur- 

 face. Context thin, almost none, pale. Pores minute, \ l /2-2 mm. long, 

 isabelline color which may be due to age, as it is described as white. 

 Spores abundant, globose, 8 mic., pale colored, which may also be due 

 to age. This is a strongly marked species of which several specimens 

 have reached Kew from northern South America. 



DUBIOPANSUS. This has all the characters of the preceding except that 

 the pores have orange mouths. This is quite uniform and appears to me a natural 



125 



