REPORT OF THE STATE BOTANIST I9OO 1/9 



slightly rounded behind, white ; stem firm, solid, glabrous, white; spores 

 globose, verruculose, .0004-.0005 of an inch broad. 



Both this and the preceding species belong to the section Com- 

 pactae, which is characterized by the firm flesh and even margin of the 

 cap and by the unequal gills. In all our other species of this section 

 the cap changes color with age, but in this one it does not. It is per- 

 sistently white or whitish except the center of the cap, which is often 

 varied by yellowish or rusty yellowish hues. Its surface is not polished 

 or shining though nearly smooth and even. The young gills are 

 sometimes adorned with drops of moisture, but they shed no milky juice 

 where cut or broken, and by this character the species may be dis- 

 tinguished from the similar white species of L act a riu s, L. pip - 

 e r a t u s and L. v e 1 1 e r e u s. The species is also closely related to 

 R. d e 1 i c a, but is separated from it by the unpolished surface and 

 dingy yellowish stains of the cap, the close gills and their tardily acrid 

 taste and the larger warty spores. 



The stem is generally very short, its length in many cases scarcely 

 exceeding its thickness, but, when growing among mosses or fallen leaves 

 in woods, it is longer. It and the gills are white. In drying, the color 

 of the gills becomes less white. The cap is 3-5 inches broad ; the stem 

 1-2 inches long, 6-10 lines thick. The plant grows in woods and in 

 open places and occurs from July to October. Fried in butter, it has an 

 excellent flavor. Indeed, all the species of R u s s u 1 a that I have tried 

 are very agreeable and palatable when properly cooked, but insects 

 are so fond of them that it is sometimes difficult to obtain sound speci- 

 mens in sufficient quantity for the table. 



Russula rugulosa n, sp. 



RUGULOSE RUSSULA 



PLATE 72, FIG. 12-18 



Pileus rather thin, fragile, convex, becoming nearly plane or centrally 

 depressed, viscid when moist, roughened or uneven with small tubercles 

 and rugae, even on the margin when young, becoming tuberculate striate 

 with age, the viscid pellicle separable on the margin, flesh white, reddish 

 under the cuticle, taste tardily acrid; lamellae rather close, adnate or 

 slightly rounded behind, white; stem nearly equal, spongy within, white; 

 spores white, rough, subglobose, .0003-.0004 of an inch broad, shining in 

 transmitted light. 



The rugulose russula is closely related to the emetic russula, but dif- 

 fers from it in the uneven or rugulose surface of the cap, in the tardily 



