LACTARIUS. 29 



Rigid, regular in form, milk acrid, white, unchangeable. 

 (Fries.) 



Readily distinguished amongst the species with a dark, 

 minutely velvety pileus, by the acrid, persistently white 

 milk. 



Lactarius (Russ.) ligniotus. Fr. 



Pileus 2-3 in. across, flesh thinner than the breadth of the 

 gills, and like that of the stem, changing slowly when 

 broken from white through ochraceous to saffron or rust- 

 colour ; convex then expanded, and subdepressed margin at 

 first incurved then arched and drooping, umbonate, marked 

 with radial folds or wrinkles, pruinosely velvety then almost 

 glabrous, zoneless, remarkably dry, very opaque, sooty- 

 umber ; gills at first rounded behind and adnexed, then 

 somewhat decurrent, 1 line and more broad, thin, rather 

 crowded, almost snow-white when young, then whitish 

 ochre, reddish when wounded ; stem 3-5 in. long, somewhat 

 ventricose up to f in. thick at the centre, ^ at the apex, 

 stuffed, corticated, apex constructed and plicate, pruinosely 

 velvety, coloured like the pileus, but the base whitish ; 

 spores pale ochraceous, subglobose, minutely echinulate, 

 9-10 ju, diameter; milk scanty, sweet, pleasant, changing, 

 like the flesh, through reddish, to saffron. 



Lactariua ligniotus, Fries, Monogr., ii. p. 177. 



Among moss in damp places under fir trees, &c. 



Smell almost none. Allied to L. fuliginoeus, but distin- 

 guished by the stem being distinctly pruinosely velvety, 

 whereas in the last-named species it is glabrous, and also by 

 the persistently velvety, smoky-umber, radially wrinkled 

 pileus. 



Lactarius (Russ.) retisporus. Mass. 

 Pileus 2-3| in. across, convex then plane and with the 

 disc depressed, dark smoky-brown, minutely velvety, radi- 

 ally rugulose from disc to margin; flesh nearly \ in. thick 

 at the centre, only slightly thinner towards the margin ; 

 gills subdistant, \ in. broad, deeply sinuate and slightly 

 adnexed, intermediate ones numerous, pale ochraceous with 

 darker spots; stem l|-2 in. long, fin. thick, equal, solid, 



