1 6 Cincinnati Society of Natural Hislory, 



becoming [)allid ; the border byssine. Teetli arising from a porous 

 l>ase, compressed, unequal, incised, oblique. 



Upon the liark of various trees, rare. Subiculum thin, closely 

 adnate, at first porose, but the dissepiments then deiitatej at length 

 the teeth become altogether Hydnoid. 



(ienus III. — Radulim, Fr.' 

 Hymenium ampliigenous, tuberculose : tul)ercles rude, de- 

 formed, commonly elongated, obtuse, waxy, discrete, with no reg- 

 ular arrangement. 



1. R PAi.r.iDUM, B. and C. At lirst orbicular, then confluent 

 and effused, with a narrow reflexed tomentose margin, pallid. 

 Tubercles terete, short, de:formed, scattered or sometimes collected 

 in lines or groups. 



On the smooth bark of branches of Oak, Hickory ,etc. 'rheupi)er 

 reflexed margin is usually very narrow but sometin^esit ])rojects as 

 much as a quarter of an inch; on the lower side there is commonly 

 a fimbriate border, through sometimes it is reflexed also. 



2. R. ORBICULARK, Fr. /// aiituinii, orbicular, confluent, 

 white then yellowish, the border byssine; tubercles elongated, 

 nearly terete, scattered or fasciculate. /// spring,, waxy, glab- 

 rous flesh color : tubercles softer and shorter as if worn off. 



On dead trunks and bran( hes of Carpinus. Effused, often 

 for several feet, in a thick waxy stratum, presenting various inqua!- 

 ities of surface in the shape of warts, granules, tubercles, etc. It 

 is scarcely typical on this matrix, biu then Fries says of this species 

 tliat of all resujjinate fungi it is the most variable in form, 



3. R. \ioi.\KK, Pers. Widely effused, crustaceous, glabrous, 

 pale wood color, becoming a little yelU^wish. Tubercles deformed, 

 short, conic, glabrous, scattered or confluent in groups. 



On old trunks of Elm, Hickory, etc. Effused for .several feet 

 in a thi( k waxy stratum, which, when dry is hard and crustaceous, 

 ihc color is alutaceous or pale ochraceous. 



Oenus IV.^ — Pui.KBiA, Fr. 



Hymenium inferior or an)i)higenous, soft, waxy, glabrous, 

 contiguous, from the first raised into wi inkles and crests, the 

 wrinkles crowded, interrujjted, persistent, the edge entire. 



I. 1'. I'liKAPA, Peck. Pilei < oriaceous, effusoreflexed, zon- 

 ate, subtomentose, purplish Iirown. n\nienium brownish, stained 

 with red or orange, the folds crowded and radiating. 



