SPORES HYALINE. 



Fig. 653. 



Trametes robiniophila. 



when we noticed the red stain beginning to develop. Montagne 

 described it as white, but the specimen now has a red stain and the 

 context (even the hyphae under the microscope) is dark, almost black. 

 Murrill had a clear idea of the species, and he was the first one who 

 had. There are abundant specimens at New York. Berkeley made 

 one Cuban determination right, but his Polyporus hemileucus in the 

 type idea with "white context" is this plant, although he also cites 

 specimens that are Polyporus valenzuelianus. Old specimens of 

 Trametes cubensis and Polyporus valenzuelianus, both having red 

 stains on the pileus and the context becoming dark with age, are very 

 likely to be confused. Freshly collected specimens, however, can 



315 



