SECTION LIGNOSUS. 



ZAMBESIANUS (Fig. 424). Pileus strongly rugulose with a 

 distinct, dull crust, brown, zonate. Context gilvus, rigid. Stipe meso- 

 podal (but not preserved with the type). Pores small, 8 mm. deep, 

 gilvus context and brown mouths. Hyphae bright yellow under the 

 microscope. Setae none. Spores not found, but doubtless white. 

 This is known from a single specimen, preserved at Kew and collected 

 in Zambesi in 1881. It was misreferred to rudis. It is the only meso- 

 podal polyporoid I ever saw with gilvus context. 



Fig. 425 



Lignosus scopulosus. 



b. STIPE BLACK MELANOPUS. 



SCOPULOSUS (Fig. 425). Pileus with a smooth, pale, thin 

 crust. Stipe lateral, black, with a black crust. Context punky, isa- 

 belline, with slender, pale hyphae. Pores minute, isabelline, with con- 

 colorous mouths. Spores hyaline. This is a frequent plant in the 

 East and has been well illustrated by Reichardt under the name 

 Trametes Rhizophorae, under which name it has been well known 

 to me for a number of years. It is a noteworthy plant with its black 

 stem, and smooth, pale pileus. It is given in Saccardo as a Fomes, 

 but is a ligneous Polyporus or might be classed as a Trametes. 



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