204 



Cincinnati Society of Natural History. 



Boletus strobilaceus, Scop. — On the ground, and on rotten trunks 

 of trees. Cincinnati, July, August; Waynesville, Aug. 4, 1844.* 



Polyporus radicatus, Schwein. — Wa} r nesville, Sept., 1844.f 



Polyporus arcularius, Fr. — Cincinnati, May 8, 1841, April 30, Ma} T 

 7, 1842.J; 



Polyporus connatus, Schwein. — On ground where wood had been 

 burnt, amongst 1'unaria hygrometrica. Cincinnati, June 4, 1842.§ 



Polyporus fissus, n. sp. — On a decaying stick. Waynesville, Sept. 

 5, 1844. 



Pileo primum infundibuliformi, demum fisso, lobis flabelliformibus, 

 tenuissimo, luteo-fusco; stipite brevi, deorsum nigro; hymenio albo ; 

 poris minimis. 



Pileus one and a half to two inches across, at first infundibuliform, 

 at length split once or twice behind into flabellate lobes, extremely thin, 

 quite smooth, minutely striate, yellow brown ; stem scarce half an inch, 

 very minutely velvet}^ black below ; pores white, invisible to the naked 

 e3^e, punctiforra. Closely allied to P. varius, but a much more delicate 

 species than any of its allies. The pores are as minute as in P. xan- 

 thopus, so that it was sent as a Thelephora. 



Polyporus rhipidium, n. sp. — On rotten trunks, in woods. Waynes- 

 ville, Aug. 21, 1844. 



Csespitosus ; pileo coriaceo, reniformi, concentrice sulcato, alutaceo- 

 albo, cute in areolas furfuraceas secedente ; stipite laterali, brevi, 

 sursum dilato, pruinoso ; poris parvis, albidis, angulatis, denticulatis, 

 quandoque elongatis. 



Pilei gregarious, csespitoso-imbricate, coriaceous, three quarters of 

 an inch long and broad, deeply, concentrically sulcate, yellowish, 



* The spores in this species are subglobose or obliquely ovate, and by no means elon- 

 gated as in other Boleti In the Ohio specimens I find them minutely granulato-echinulate. 

 The tubes, too, do not separate from the pileus. It will probably form, some day, the type 

 of a distinct genus. 



•j- Specimens of this occur of various sizes, from what Schweinitz describes, to five inches 

 across, with the stem eight inches or more high, and an inch thick. 



X The specimens agree exactly with one from the Pyrenees, given me by Dr. Montagne. 

 Fries describes the pores as entire, but this character is probably taken from Micheli's 

 figure. 



\ With this is a variety of Polyporus perennis, which Mr. Lea considered a form of P. 

 connatus. There is, however, such an immense difference in the pores, that I can scarcely 

 credit it, though the external resemblance is very strong. 



