92 LACTARIAE OF THE UNITED STATES 
pileus being found only later in the season when the weather was 
drier. Consequently, the forms having a rugose pileus I would | 
include as merely a normal variation of the species. 
Linnaeus describes Agaricus lactifluus “ pileo plano carneo lac- 
tescente, lamellis ruffis, stipite longo сагпео” This is rather brief 
to indicate plainly the type that he was describing, but he cites 
Haller’s “ Fungus flavo-ruffus in medio depressus, lacte non аст 
manans” as synonymous with Agaricus lactifiuus. Haller 
description applies without doubt to Z. volema Fr. He says “ not 
rare in forests, easily recognized from its smoothness, firm flesh, 
sweet milk such as is rare in fungi. In shape the pileus is ele- 
gantly depressed in the center, with the margin roundly elevated. 
The color is everywhere rufus-flavous, butyraceous, lamellae paler. 
Not decaying, but becoming coriaceous. It is edible, with good - 
taste. Ours is occasionally 4 in. in diameter.” (Haller, Helv. 
50. 1742.) Lamarck in Fl. Ег.т: 106. 1748, describes Agaricus | 
lactiffuus of Linnaeus іп terms which show his plant to have been | 
L. volema Fr., and he cites Schaeff. ai 5. Тһе gills of Г. volema 
Fr. become rufous with age or in drying so that there is nothing in ` 
Linnaeus’ description which disagrees with this species ; and from | 
his citation there seems to be little doubt that his plant was iden- ` 
tical with 2. volema Fries. 
Agaricus oedematopus Scop. does not seem to differ from А. - 
volema Fr. and the description by Scopoli agrees more exactly | 
with Fries’ description of Z. volema than it does with the 
“variety ” oedematopus. And from Scopoli's description I have | 
referred Agaricus oedematopus to L. laċtiflua (L.), or L. volema Е. 
59. LACTARIA HYGROPHOROIDES Berk. & Curt. Annals and Mag: | 
Nat. Hist. III. 4: 10. 18 59. [As Lactarius.| — Hennings, 
in Eng. & Prantl, Nat. Pflanzenfam. 1'**: 214. 1898 
Lactarius distans Peck, Ann. Rep. М. Y. St. Mus. 23: ИГ. 
1873. [Separate in April, 1872. | 
Pileus fleshy, firm, convex, then plane, depressed in the center | 
Sometimes becoming infundibuliform, yellowish-buff (37 ec 
(328), or fulvous (308), azonate, dry, very minutely DOT", 
velvety, appearing as though pulverulent, sometimes rugose, 5011” 
times rimose-areolate, 4-10 cm. broad, margin involute, then SI" ` 
