128 TTHIRTY-EIGHTH REPORT ON 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, swbmoist, generally zonate, livid-cinereous, grayish- 
brown or lilac-brown; lamelle thin, distant or swbdistant, 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 in.; milk white, taste acrid. 
- Pileus 1.5 tq 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. 
~“Kugust 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, /7. 
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; lamellz 
adnate or subdecurrent, subdistant, whitish, then yellowish, becoming 
stained with pink-red or salmon color where wounded; stem equal or 
slightly tapering downwards, firm, stuffed, colored like the pileus; 
spores globose, yellowish, .co03 to .0004 in.; 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 lamellz 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. : 
