described by Fries and is strongly characterized by its very soft, white, spongy flesh. I found 

 it in several museums in Europe, always misnamed: at Kew as Polyporus leucocreas and 

 Polystictus hololeucus ; at Berlin misreferred to Polyporus colossus ; at Paris (from New 

 Caledonia) named Polyporus spermolepidis. 



NOTE 181. Polyporus Cummingii, sent by Professor Yasuda, Sendai, Japan. Compared 

 with the type. Spores 4x8, hyaline, many smaller. Setae none. I am beginning to be 

 a little suspicious that Polyporus scaurus (Letter 44, No. 63) is the same thing. If so, 

 I have mistaken the spores in the description. 



NOTE 182. Hydnum adustum, from Professor A. Yasuda, Sendai, Japan. A frequent 

 plant in the United States, but unknown from Europe. The specimens of Letter 47, 

 supposedly from Portugal, I have since been informed, were American specimens. I believe 

 this is the first time the species has been found, excepting in America. 



NOTE 183. Polyporus (unnamed, I think), from Professor A. Yasuda, Sendai, Japan. 

 Pileus orbicular, reduced to the base (6x6x1 cm.). Surface even, light-brown, minutely 

 pubescent. Context white, dry, soft but firm, punky. Pores medium, V> mm. white, 4 mm. 

 long, with irregular, angular mouths. Spores not found. From this single specimen I 

 would class it in Section 12 (Petaloides), but it is certainly different from any there 

 included. Perhaps, however, it is an "Apus" species, then it is comparable to Polyporus 

 tephroleucus of Europe, but with different context. 



NOTE 184. Odontia crocea. Color bright orange (orange chrome of Ridgway). 

 Forming a loose, separable membrane, usually on very rotten wood. Margin fimbriate, 

 orange, or when quite young, white. Teeth rather short, thick, conical. Cystidia none. 

 Spores white in mass, 3x4 ; hyaline, smooth. 



This is one of the most brightly colored fungi we have, but it usually grows on under- 

 side of log so that it is easily overlooked. It is fairly common around Cincinnati, but Morgan 

 never recorded it. The entire plant, subiculum and teeth, are bright orange. The subiculum 

 is developed over long, orange mycelial strands. The host is sometimes colored orange, with 

 the mycelial threads. 



It is Sistotrema crocea of Schweinitz' description to the word. I found no specimens 

 in his herbarium, and there are none in their place, if they occur. There are said to be 

 specimens in some out-of-the-way place that are Phlebia radiata. The description does not 

 apply to Phlebia radiata, and if there are specimens so labeled, it is due to some error. Un- 

 derwood discovered it to be a "new species" and called it Hydnum chrysocomum, but Under- 

 wood knew precious little about American mycology. Berkeley probably has it named also, 

 but I never looked up this section at Kew. 



Old herbarium specimens of Odontia crocea lose all their bright color. There is no 

 indication that the plant occurs in Europe, nor anything similar. 



NOTE 185. Hexagona olivacea. Pileus ungulate, in the type specimen scutellate. 

 Surface smooth, even, pale, with a slight reddish tinge. Context hard dark olive (Dresden 

 brown of Ridgeway). Pores large, 1% to 4 mm. in diameter, rough, or irregular. Pore 

 surface white, contrasting with the olive context. Cystidia none. Spores not found. 



This is based on a single specimen received from Rev. James Wilson, Victoria, Australia. 

 At first I referred it to Hexagona Gunnii, but on comparison I find it is entirely different. 

 It is the only Hexagona I know with this context color. A section shows a thick (150 mic.) 

 subhymenial layer of subhyaline hyphae, not forming subhymenial cells. The basidia are 

 large, obtuse, forming a palisade layer. Cystidia none. 



NOTE 186. Hydnum acre. It has been recently stated that Hydnum acre is the same 

 as Hydnum cristatum. I cannot agree to this. Hydnum cristatum is a synonym for Hyd- 

 num mirabile, a rare plant in Northern Europe, more common with us in the East, but 

 comparison of undoubted specimens from Europe of Hydnum acre with Hydnum mirabile 

 show them markedly different. The surface is entirely different, also the context, which in 

 Hydnum acre is hard when dried and almost ligneus, while it is quite soft in Hydnum 

 mirabile. I do not believe they are forms of one species. 



