SECTION 6, PALLIDUS. 



This section is quite distinct from all that precede in the pale color of its 

 context. One species (albida) when fresh is pure white hut discolors some in 

 drying. The usual color of the museum specimens of this section may be 

 called pale ochraceous or isabelline. I doubt if there are any in this section 

 that are true Hexagonas. Probably all have the character of the variation of 

 the hymenium strongly developed. In Hexagona albida (cfr. Figs. 313 and 314) 

 and particularly in Hexagona ochroleuca the hymenium takes hexagonal, daeda- 

 loid, and lensitoid forms and this tendency to variation is as much a specific 

 character as any character'a species can have. 



Fig 313 



Fig 314 

 Hexagona albida. Photographed in Samoa. 



HEXAGONA ALBIDA (Figs. 313 and 314). Pileus pure white 

 with soft, smooth, faintly zonate surface. Context soft, almost 

 when fresh, in drying it becomes discolored in lime and more t 

 Pores large, irregular, about 5 mm. deep with thin walls, 

 lenzitoid forms ( Fig. 313) are found growing with the hexagonal f 

 and our figures (313 and 314) are specimens that grew f 

 same mycelium. 



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