LACTARIAE ОЕ THE UNITED STATES 99 
North Carolina, Burlingham 3, 1907; Tennessee, Murrill; Ala- 
Бата, Earle. 
Плозт.: Вама, Champ. Nice, 2/20. f. 11-13 (coloring poor); 
Bern. Champ. Roch. ad. 38. f. 2; Bull. Herb. Fr. ai, CSI NS RE ge 
Cooke, Br. Fungi, p/. 1013. f. а; Hahn, Der Pilz-Sammler, /. 
12 (coloring poor); Krombh. Abbild. ai 39. f. 21-24; Sicard, 
Hist. Nat. Champ. A. 43. f. 243 (poor); Venturi, Studi Micol. 
pl. 13. f. 126 (poor). 
DISTINGUISHING FIELD-MARKS: This species is of about the 
size of Lactaria subdulcis and sometimes of nearly the same color, 
but usually it is a darker-fulvous or more red-brown, and the 
flesh is firmer. Тһе odor is usually faint at first but becomes 
strong as it dries. То me the odor is like that of slippery-elm 
bark. The pileus is polished in appearance and does not fade 
with age nor become rimulose. 
The European writers describe the pileus as zonate, but no 
zonate specimens have been reported in the United States. In the 
Б'е 
Onoinal deccrrintian В 
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which would seem to indicate that the zonation was not marked by 
a difference in color so much as by concentric wavesor furrows. 
In North Carolina I found several times in the same place and 
once in a different locality plants which were different in several 
points from the typical Z. camphorata, but had the characteristic 
odor both when fresh and in drying, though slightly fainter. 
When dried they closely resemble small forms of Г. camphorata. 
Until I have made further collections I hesitate to describe this 
plant as a distinct species, but it seems to me to be more than a 
variable form of Г. camphorata, and hence I shall assign it the rank 
of subspecies under the following name and characterization : 
64a. Lactaria camphorata fragilis subsp. nov. 
Pileus soon depressed in the center, with or without an umbo, 
very thin, snuff-brown (303) or burnt-umber (304) toward the 
center, not fading, azonate, dry, glabrous, pruinose, sometimes 
rugose in the center 2.5-3.5 cm. broad, margin crenate and some- 
what sulcate; gills maize-yellow (36. 2. 4), not crowded, about 
five times broader than the thickness of the pileus; stem burnt- 
umber, stuffed, becoming hollow, 2-5 cm. long, 4-0 mm. thick ; 
latex watery, mild, abundant. Other characters like those of Z. 
camphorata. 
