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LACTARIAE OF THE UNITED STATES 41 
when young, wounds becoming Шас; gills somewhat darker with 
age and slightly pruinose. 
While Lactaria aspidea апа Lactaria aspideoides have a decidu- 
ous minute tomentum on the margin of the young pileus, the other 
species are merely pruinose-downy to almost glabrous, and all 
the species agree in being entirely glabrous when mature. This, 
together with the extreme viscidity of the pileus and the lilac color 
assumed by the wounds, indicates their relationship. Lactaria 
speciosa seems to be more closely related to the Zorminosae by its 
very long tomentose covering and less viscid surface. 
Synopsis of species 
Pileus gray. 
Conspicuously zoned and spotted, 7-12 cm. broad. 23. L. maculata. 
Faintly zoned or azonate, up to 8 cm, broad. 22. L. lividorubescens. 
Pileus yellow. 
Azonate, latex acrid. 20. L. аз аға. 
Zonate, latex bitter. 21. L. aspideoides. 
20. LACTARIA ASPIDEA (Fr.) Fr. Еркг. 336. 1838. [As 
Lactarius.]— Hennings, in Eng. & Prantl, Nat. 
Pflanzenfam 1'**:218. 1898 
Agaricus aspideus Yr. Obs. Мус. 2: 180. 1818. 
Agaricus roseo-violascens Lasch, Linnaea 3: 161. 1828. 
Pileus fleshy, not thick, plane to convex, slightly papillate, at 
length depressed, straw-colored, somewhat sordid, azonate, viscid, 
3-10 cm. broad, margin at first with a zone of white silky decidu- 
ous tomentum, then entirely glabrous ; gills white or cream, rather 
close, somewhat thick, of various lengths, here and there connected 
by branches,about 2 mm. broad; stem of the same color as the pileus 
or paler, nearly equal, even, glabrous, stuffed, then hollow, 5-8 
cm. long, up to 15 mm. thick ; flesh white, becoming lilac where 
wounded; spores globular, echinulate, 8-10 и; latex white, 
changing to lilac, acrid. Porsonous. 
Нав.: In moist places under willows, and іп the border of 
woods, September. 
Півтків.: New York, Peck. 
Птозт.: Lanzi, Fung. Mang. pl. 56. f. 2. а, б, с, d; Cooke, 
Br. Fungi, a 1083 ; Agaricus pudibundus* Pico, Mem. Soc. Med. 
Par. M. 12. 1780. 
* This name was preoccupied. See Scop. Fl. Carn. 2: 452. 1772. 
