Supplement 



raw is no evidence whatever that they are harmful, 

 disappears in cooking. Mcllvaine. 



Acridity usually 



(Plate CXCVI.) 



Eussula abietina Pk. Rep., 1900: 180. Fir Tree Russula. Pileus 

 thin, fragile, convex, becoming nearly plane or slightly depressed in 

 the center, viscid when moist, the viscid pellicle separable, tuberculate 



striate on the margin. Flesh white, 

 taste mild. Lamellae subdistant, ven- 

 tricose, narrowed toward the stem, 

 rounded behind and nearly free, whit- 

 ish, becoming pale yellow, the inter- 

 spaces venose. Stem equal or taper- 

 ing toward the top, stuffed or hollow, 

 white. Spores bright yellowish och- 

 raceous, subglobose, rough, 8-io/u. 

 broad. 



The fir tree russula is closely related 

 to the youthful russula, R. pnellaris 

 Fr., from which it is separated by the 

 viscid cap, the gills rather widely 

 separated from each other and nearly 

 free, the stem never yellowish nor 

 becoming yellow where wounded, and 



the spores having an ochraceous hue. They are much brighter and 

 more highly colored in the mass than the mature gills. The cap 

 varies much in color, but the center is generally darker than the rest. 

 It may be dull purple or greenish purple with a brownish or blackish 

 center, or sometimes with an olive green center, or it may be olive green 

 or smoky green with a brownish center. Olive green and purplish hues 

 of various shades are variously combined, but sometimes the margin is 

 grayish and the center olive green. The flesh is white and its taste 

 mild. The gills are white when young, or barely tinged with yellow, 

 but they become pale yellow with age. They are neither crowded nor 

 widely attached to the stem, and are connected with each other by cross 

 veins, which can be seen at the bottom of the interspaces. The stems 

 are rather slender, soft or spongy, sometimes becoming hollow and oc- 

 casionally tapering 'upward. They are very constantly and persistently 

 white. The cap is 1-2.5 inches broad, the stem 1-2.5 inches long, 



718 



Va nat 



