retipes, United States, Underwood, same as pes-caprae of Europe. 



Rostkowii, Europe, Fries. See page 85. 



Schweinfurthianus, Africa, Hennings, was based on a Boletus. 



scobinaceus, name used as a juggle for tuberaster. 



subradicatus, United States, Murrill. I have seen no specimens but it i-; 

 distinguished in the key character by having "irregular tubes" which "in radu-atu-; 

 are regular and entire." As the tubes in radicatus are neither regular nor entire 

 (cfr. Fig. 508) the distinction does not seem to me to be very good. 



subsquamosus, Europe. Attributed to Linnaeus, but I do not believe that 

 any one has ever known what Linnaeus so called and very few know the 

 plant in the sense of Fries. In my opinion it is the same plant as griseus of the 

 United States, which is so much better and so much more certain that I have- 

 used it. 



tessulatus, Europe, Fries. Based on an old crude figure of Micheli's nearly 

 two hundred years ago, not found since and probably imaginary in the start. 



violaceo-maculatus, China, Patouillard. See page 79. 



virellus, Europe, Fries. Based on Italian figures which appear to me to be 

 regular specimens of cristatus as named by the author. Specimens distributed 

 by Sydow as virellus (No. 2512) are surely cristatus. 



viscosus, Europe, Persoon, is not a Polvporus but a Boletus. The type is in 

 Persoon's herbarium, also what seems to be the same collection at Kew. 



Whiteae, United States, Murrill. See page 81. 



xoilopus, Europe, Rostkovius. Only known from the original figure, which 

 seems to me to be a young Boletus. 



