SPORES HYALINE. 



Mr. Weir finds this plant on Larix in Idaho. It is most excellently 

 named, for such abundant setae are found on no other species. Several 

 collections that Mr. Weir sent us are entirely resupinate. In context, 

 color, and setae the plant is close to Polyporus gilvus. 



TRAMETES FARCTA. Pileus thin, cinnamon brown (4x6x1 cm.), with 

 sulcate, soft surface. Context concolorous, thin, but represented by the old stuffed 

 pores very light weight. Pores large, sinuate, >-! mm., almost reaching the crust; 

 but the old pores are filled with brown hyphae, so that they appear as context. Setae 

 slender, sharp, very numerous. Spores not found, no doubt hyaline. 



Rick distributed this (No. 108) as "Fomes cereus Berk.", which is some error, 

 apparently, for no such species was published as far as we can find. Surely it is not 

 Poria cerea from India, and there is nothing "waxy" about it, but just the contrary, 

 or we would retain the misname. Technically it is a Fomes, but on account of its 

 light weight, nonligneous tissue, and general nature we should class it as Trametes. 

 Its affinities are with Polyporus gilvus, and it is very close to Polyporus setosus. 



POLYPORUS BAM BUSINUS. Pileus general size, shape, and color as Poly- 

 porus gilvus. As to texture and surface, closer to Polyporus licnoides. Setae same. 

 Spores hyaline, subglobose, 4-5 mic. The plant bears also conidial spores of a different 

 type, colored, smooth, and measuring 6-8x8-12 mic. Abundant specimens are 

 known in Patouillard's herbarium from China, where it occurs on the bamboo. 





Fig. 688. 

 Polyporus radiatus. 



POLYPORUS RADIATUS (Fig. 688). Pileus dimidiate, sessile, 

 triquetrous, with thin margin. Surface minutely velutinate, at length 

 strongly rugulose, radiate. Flesh hard, dry, yellowish brown. Pores 

 concolorous, small, about ^ cm. long, with mouths that glisten 

 silvery when turned to the light. Setae rare, short, thick. Spores 

 hyaline, 4-5 x 5-6. 



This is a frequent plant in the United States and Europe, usually on alder. It 

 is easily confused with Polyporus cuticularis, having about the same general shape 

 and color, but easily distinguished by the spores. There is an erroneous tradition 

 extant in regard to the color of its spores. Patouillard and Murnll each put it in a 

 "new genus" based on "colored" spores. We never had a spore print, but abundant 



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