102 THE AGARICACEAE OF MICHIGAN 



sphagnum and then the base of the stem is white-toinentose. It 

 seems to be most frequent in the Northern Peninsula. Its edibility 

 is uncertain; it is considered poisonous in Europe. 



75. Lactarius maculatus Pk. (Suspected) 

 X. Y. State Mus. Pep. 41, 1S88. 



PILEUS 8-12.5 cm. broad, convex-umbilicate, then expanded- 

 depressed to infundibuliform, grayish-buff to grayish-lilac, distinctly 

 zoned with concentric darker spots, viscid when moist, glabrous, 

 margin at first involute, naked, then spreading and substriate. 

 FLESH grayish, becoming lilac where bruised, rather compact. 

 GILLS adnate-subdeeurrent, close, broadest in the middle, attenuate 

 behind, whitish to cream-color, lilac-vinaceous where wounded. 

 STEM 3-7 cm. long, 1.5-3 cm. thick, subequal, ventricose or tapering, 

 hollow, sometimes compressed, spotted-variegated, concolor, glab- 

 rous. SPORES "subglobose, echinulate, 10-12.5 ruicr." (Peck.) 

 MILK at first white to cream color, unchanged or becoming lilac on 

 the flesh, acrid. 



On sandy ground, oak and maple hillside along Lake Superior, 

 Marquette. August. Rare. 



This is closely related to L. uvidus, differing from it in its dis- 

 tinctly zonate pileus, larger size and spotted stem. The milk in our 

 specimens remained unchanged. It is likely that the milk in both 

 L. uvidus and L. maculatus sometimes turns lilac-vinaceous, that 

 at other times it remains unchanged except to cause the broken 

 flesh where it is touched by the milk to assume a lilac-vinaceous 

 color. 



Section IV. Pileus glabrous, viscid; taste mild; milk bright- 

 colored from the first. 



76. Lactarius subpurpureus Pk. (Edible) 

 N. Y. State Mus. Rep. 29, 1878. 



Illustrations : Peck, Ibid, 54, PI. 70, Fig. 1-6. 



Burlingham, Torr. Bot. Club Mem. 14, Fig. 8, p. 61, 1908. 



PILEFS convex-umbilicate, then expanded-depressed to subin- 

 fundibuliform, dark red, pink-zoned, with a grayish lustre, spotted 

 with emerald-green, subviscid when moist, glabrous, margin at first 



