Leucosporae 



An exceedingly distinct species. Regular, solitary, with a weak, pieurotus. 

 pleasant, not mealy odor. The pileus is a little thicker than that of 

 A. lignatilis, but less compact; the gills are twice as broad. As A. 

 lignatilis is changeable, this is always constant in form. 



On rotting birch stump. Stevenson. 



California, H ' . and M . 



Found at Eagle's Mere, Pa., August, 1898, on birch trees. Generally 

 solitary; sometimes six or eight on one tree, beautifully shining white, 

 at a distance resembling young Polyporus betulinus. Large quantities 

 of it grow in the extensive birch forests at Eagle's Mere, yielding a 

 ready food supply. Its flavor is pleasant, and texture, when cooked, 

 quite tender. 



P. ptlbes'cens Pk. ptibes, down or soft hair. Pileus fleshy, con- 

 vex, suborbicular, pubescent, yellowish. Gills broad, subdistant, 

 rounded behind, sinuate, pallid tinged with red. Stem short, firm, 

 curved, eccentric, colored like the pileus. Spores globose, 8/u. broad. 



PileilS about 2 in. broad. Stem scarcely I in. long. 



Trunks of trees. Lyndonville. C. E. Fairman. Peck, 44th Rep. 

 N. Y. State Bot. 



West Virginia, on oak trunks. Mcllvaine. 



High, agreeable flavor; texture about as in P. ostreatus. 



*** 



Gills decurrent; stem distinct, etc. 



P. sa'pidllS Kalchb. savory. Cespitose, or several pilei appearing 



to spring from a common branched 

 stem. PileilS 1-3 in. across. Flesh 

 thick, excentric, regular, convex or 

 obtusely gibbous then depressed, 

 glabrous, white or brownish. Stem 

 stout, solid, several usually spring- 

 ing from a thickened knob, whitish, 

 i2 in. long, expanding upward into 

 the pileus. Gills decurrent, rather 

 distant, narrow, whitish. Spores el- 

 liptical, 10-11x4-5^. 



On elm trunks. 



A very variable species ; accord- 



141 



(Plate XXXVI.) 



SECTION OF PLEUROTUS SAPIDUS. 

 One-half natural size. 



