LACTARIUS. 103 



From scrobis, a trench, from the pitted stem. This is a beautiful plant 

 with a yellowish hue. Not very abundant. Found on the Lehigh 

 Mountain near Macungie. 



]v. piperatus. Fr. Peppery. 



Pileus, compact, convex, umbilicate, then expanded and 

 infundibnliforni, even, glabrous, white. 



Gills, narrow, close, like a fine-tooth comb, adnate, decur- 

 rent, white or cream color. 



Stem, white, solid, compact, glabrous, milk white. 



This species can be found in its season, almost in any open woods in 

 the Valley. Easily identified by the peppery taste and narrow gills. 



ly. vellereus. 



Pileus, white, compact, umbilicate or convex, tomentose, 

 zoneless ; margin at first inflexed, then reflexed tomentose. 

 Gills, distant, white, arcuate. 

 Stem, blunt, solid, pubescent, milk white. 

 Spores, .00019 x .00034 inch. 



From velliis, fleece, on account of the wooly margin. 



The color is nearly white. The margin involute at first, then expanded 

 and depressed in the center. Too acrid for esculent purposes. 

 Cosmopolitan. 



I/, indigo. Schw. 

 Pileus, convex, plane, depressed in the center, margin 

 straight, flesh blue and compact. 



Gills, decurrent, intensely blue, distant. 



Stem., solid, curt, tapering downwards, blue when cut, even. 



This beautiful species is rare in our Valley. Found it only in Dorney's 

 woods near AUentown, Pa. 



I/. Gerardii. Pk. 

 Pileus, fleshy, flat, dry, buff brown ; flesh white, not 

 changing color when cut. 



