Agaricaceee 



Pieurotus. cuticle imparts its character to the dish. Mixed with Lentinus lepideus, 

 a much tougher plant, which grows in great abundance in the same lo- 

 calities, it makes toothsome food. 



P. lignati'lis Fr. lignum, wood. Dingy whitish. Pileus 1-4 in. 



broad, rarely central, commonly more or less excentric, occasionally 

 wholly lateral, often kidney-shaped, fleshy, thin, but compact and 

 tough, fissile, convex then plane, obtuse and often umbilicate, flocculoso- 

 pruinate, at length denuded with rain, repand, margin at first involute 

 then expanded, undulato-lobed when luxuriant. Stem sometimes 2-3 

 in., sometimes 3-4 lines long (even obliterated), stuffed then hollow, 

 always thin, unequal, curved, curved or flexuous, tough and flexile, 

 whitish, everywhere pruinato-villous, rooting and somewhat tomentose 

 at the base. Gills adnate, very crowded and narrow, unequal, diverg- 

 ent in the lobes, shining white. Fries. 



Exceedingly variable, wholly inconstant in form ; substance thin and 

 pliant; commonly densely cespitose, but also single. Odor strong of 

 new meal. 



On wood, beech, etc. Stevenson. 



Parasitic on a rotten plant of Polyporus annosus on elm. W.G.S. 



White and grayish-white, margin faintly striate; white-spotted, odor 

 distinctly farinaceous. C.M. 



Spores 3-4^ long, Morgan, Cooke, W.G.S./ 4-5/x K. 



Var. abscon'dens Pk. obscure. New York, Peck, Rep. 31, 39. 



On trunks, scattered, sometimes loosely clustered. Griffins, Delaware 

 county, N. Y. September. New York, Peck, Rep. 31, 39. 



Kingsessing, near Philadelphia; Mt. Gretna, Pa. Mcllvaine. 



This is a good species in every way. I have not found it in extended 

 quantity, but it is probable that it will be found in plenty when closer 

 observed and better known. 



P. circina'tus Fr. to make round. Wholly white, not hygrophanous. 

 Pileus about 3 in. broad, orbicular, horizontal, fleshy, tough, convex 

 then plano-disk-shaped, obtuse, even, but covered over with a shining 

 whitish slightly silky luster. Stem 1-2 in. long, 3-4 lines thick, 

 stuffed, elastic, equal, central or slightly excentric, commonly straight, 

 smooth, bluntly rooted at the base. Gills adnate, slightly decurrent, 

 crowded, broad (as much as 3 lines), white. Fries. 



140 



