128 Thiety-eighth Repobt ok the State Museum. 



Lactarius pyrogalus, Fr. 



Caustic Lactarius. 

 Agaricus pyrogalus, Bull. A. rusticanus, Scop. 



Pileus broadly convex, plane or slightly depressed, sometimes umbili- 

 cate, glabrous, even, submoist, generally zonate, livid-cinereous, grayish- 

 brown or lilac-brown ; lamellae thin, distant or subdistant, adnate or 

 subdecurrent, yellowish; stem equal or slightly tapering downward, 

 glabrous, stuffed or hollow, paler than or colored like the pileus; spores 

 globose, yellowish, .0003 to .00035 m -5 milk white, taste acrid. 



Pileus 1.5 to 2.5 in. broad, stem 1 to 1.5 in. long, 2 to 4 lines thick. 



Thin woods and open places. Sandlake, Greenbush and Karner. 

 August to October. 



The zonate pileus, distant lamellae and yellowish spores separate this 

 species from its allies. The milk is copious and very acrid and the 

 species is regarded as poisonous. Cordier states that the milk is mild 

 in young plants, acrid in mature ones. 



Lactarius fuliginosus, Fr. 



Dingy Lactarius. 

 Agaricus azonites, Bull. A. plinthogalus , Otto. L. fumosus, Pk. 



Pileus firm becoming soft, convex plane or slightly depressed, even, 

 dry, zoneless, dingy- cinereous or buff-gray, appearing as if covered 

 with a dingy pruinosity, the margin sometimes wavy or lobed; lamellae 

 adnate or subdecurrent, subdistant, whitish, then yellowish, becoming 

 stained with pink-red or salmon color lohere wounded; stem equal or 

 slightly tapering downwards, firm, stuffed, colored like the pileus ; 

 spores globose, yellowish, .0003 to ,0004 m.; milk white, taste tardily 

 and sometimes slightly acrid. 



Pileus t to 2.5 in. broad, stem 1 to 2 in. long, 3 to 5 lines thick. 



Thin woods and open grassy places. Greenbush and Sandlake. July 

 and August. 



The pileus, in this species, has a peculiar dingy or smoky hue which 

 is suggestive of the specific name. The color is a pale-cinereous or yel- 

 lowish-gray compared by some authors to the color of coffee and milk. 

 This and the yellowish color of the spores, the tardily acrid taste and 

 the pinkish hue of the wounds of the lamellae and flesh characterize the 

 species. Both Fries and Gillet state that the milk, as well as wounds of 

 the flesh, changes to a pinkish or saffron hue on exposure to the air. 

 This would transfer the place of the species to our second group, for 

 which we have made provision in the synoptical table. But we have 

 failed to verify this character in our plant, and consequently it was 

 formerly supposed to be distinct from the European, and was published 

 under the name Lactarius fumosus. But inasmuch as the European 

 plant has also been described as having white unchangeable milk, and 

 since our plant agrees in every other respect with the description given 

 by Fries, it is quite probable that the species may vary in this respect 

 and we have therefore referred our plant to it. Cordier states that 

 according to Barla and Reveil this species is poisonous. 



