LACTARIAE OF THE UNITED STATES 51 
Synopsis of species 
Pileus azonate, spores white. 25. Г. affinis. 
Pileus zonate. : 
Spores yellowish. 24. L. insulsa. 
Spores white, L. зопата.* 
24. LACTARIA INSULSA (Fr.) Fr. Epicr. 336. 1838. [As Lac- 
tarius.] — Hennings, in Eng. & Prantl, Nat. Pflanzenfam. 
pt 21O: 1608 
Agaricus insulsus Ет. Syst. Myc. т: 68. 1821. 
Pileus fleshy, firm, at length somewhat lax, convex-umbilicate, 
becoming depressed in the center, coppery-orange ( 56) with alter- 
nating zones of deeper and lighter tones, sometimes yellowish-buff 
(370) zoned with coppery-orange, center coppery-orange to red- 
ochre ( 32. 7. 4), viscid, glabrous, surface not polished, and often 
marked with striae like the stem of а Russula, 4.5—10 cm. broad, 
margin involute at first and remaining arched until the last; gills 
white, becoming dull-reddish along the margins where rubbed, 
frequently forking near the stem, adnate, becoming decurrent as 
the pileus deepens, thin, fragile, 2 mm. broad ; stem paler than the 
pileus, sometimes spotted with deeper color, tapering downwards, 
glabrous, stuffed, then hollow, 1.5-5 cm. long, up to 10-12 mm 
or more thick ; flesh white, no odor; spores pale Naples-yellow 
(29..& f, 2), globose, теке echinulate, 7-8 и, rarely би; latex 
white, unchanging, very a ficious. 
Has. : On the eeng in rather open woods ог by trails in 
mixed deciduous woods. July and August. 
DisrRiB.: New York, feck ; Maine, White; Vermont, Burt; 
North Carolina, 1,000 meters elevation, Burlingham 37, 1907 ; Ala- 
Бата, Underwood, Earle ; Missouri, G/affelter 303. 
Пловт.: Berk. Outl. A. 73. /. 2; Bres. Fung. Mang. ai 62; 
Cooke, Br. Fungi, A. 975 (good); Gillet, Champ. Fr. ai 396; 
Agaricus flexuosus Hussey, Шив, Br. Myc. A. 59 (good); 
Krombh. Abbild. ф/. 72. f. 1-6 (good); Lanzi, Fung. Mang. ad 
56. f. т, a, 6, c (good); Rich. & Rose, Atl. Champ. Fr. A. 37. 
f. 10-12. 
DisTINGUISHING FIELD-MARKS : The reddish or coppery-orange 
color of the glabrous viscid pileus, which is marked more or less 
prominently with zones, especially toward the naked, involute 
margin, the paler, usually spotted stem, the whitish gills, and the 
unchanging acridlatex. The color of the pileus is sometimes more 
* European species, the occurrence of which in the United States is doubtful, | 
