50 TWENTY-EIGHTH REPORT ON THE STATE MUSEUM. 
Clay soil. Albany. October. 
It is allied to C. micaceus, but is thinner, more fragile, 
darker in color, with more narrow lamelle which are 
darker in the young plant. The species is respectfully 
dedicated to Hon. H. Seymour. 
HYGROPHORUS MARGINATUS 2. Sp. 
Fragile; pileus subcampanulate or expanded, often irreg- 
ular or lobed, sometimes broadly umbonate, glabrous, shin- 
ing, often minutely rimose, striatulate on the thin margin, 
bright golden-yellow; lamelle rather broad, subdistant, 
ventricose, emarginate, often venose-connected, yellow, 
becoming more highly colored with age, the edge generally 
changing to orange or vermilion; stem smooth, hollow, 
often flexuous or irregular, pale yellow; spores subellipti- 
cal, about .0003’ long. 
Plant 2’ high, pileus about 1’ broad, stem 1/’-2” thick. 
Ground in woods. Northville. August. 
This seems to be the American analogue of the European 
Hi. obrusseus. After considerable hesitation I have ventured 
to separate it as a species because of its smaller size and the 
red color of the edge of the lamelle, a singular character 
which has suggested the specific name. 
HYGROPHORUS PARVULUS %. Sp. 
Pileus thin, hemispherical or convex, smooth, hygrophan- 
ous, striatulate on the margin when moist, sulphur-yellow ; 
lamellee, subdistant, arcuate, adnate or decurrent, pale-yel- 
low or whitish; stem equal, smooth, hollow, pale-yellow 
or luteous. 
Plant 1’ high, pileus 3’’-4” broad. 
Ground in woods and under Pteris aquilina. Northville 
and Lake Pleasant. August. (Plate 1, figs. 20-24.) 
The stem and pileus are slightly viscid when young and 
moist. The stem is sometimes more highly colored than the 
pileus, an unusual feature in the Agaricini. 
HyGropinorus PEckianus Howe. 
Ground under Pteris aguilina. Lake Pleasant. August. 
LACTARIUS AQUIFLUUS 2. Sp. 
Pileus fragile, fleshy, convex or expanded, at length cen- 
trally depressed, dry, smooth, or sometimes appearing as 
if clothed with a minute appressed tomentum, reddish tan- 
