Thinner, _tougher_, and later than H. virgineus, etc. Being hygrophanous the pileus is shining white when dry. Very tender forms occur. In pastures. _Stevenson._ =Spores= 7×4µ _Cooke_. The H. niveus, H. virgineus, “Ivory Caps” as M.C. Cooke calls them, are pretty and plentiful in some sections. In the West Virginia mountains, along grass-grown road-sides, their purity and exquisite perfume attracted me in 1881. I have them and a few others to thank for seducing me into becoming a mycophagist. I think of them affectionately. I have seldom met with them since. They are found on lawns and in pastures and on grassy edges of woods, early in spring and late in autumn. =H. boreal´is= Pk.—northern. =Pileus= thin, convex or expanded, smooth, moist, white, sometimes striatulate. =Gills= arcuate-decurrent, distant, white. =Stem= smooth, equal or tapering downward, stuffed, white. =Plant= 2 in. high. =Pileus= 8–12 lines broad. =Stem= 1 line thick. Ground in woods. Croghan and Copake. September and October. The species is related to H. niveus but the pileus is not viscid. _Peck_, 26th Rep. N.Y. State Bot. Found at Mt. Gretna, Pa., October 20, 1898, ground in mixed woods. The cap is white, silky, smooth, _not_ viscid. Stem likewise. A neat species pleasant in every way. ** _Gills ventricose, adnate, etc_. =H. dis´tans= Berk.—distant (of the gills). =Pileus= about 2 in. broad, white, with a silky luster, here and there stained with brown, somewhat fleshy, plane or depressed, viscid. =Stem= white above, _gray_ below, and attenuated, not spotted. =Gills= decurrent, _few_, _very distant_, somewhat ventricose, pure white then tinged with ash-color, interstices obscurely wrinkled. Often umbilicate. Remarkable for the few and distant gills. _Stevenson._ =Spores= 10×8µ _Cooke_. Caps white, shaded to light pinkish-brown toward center. Gills very distant. Leaves adhere to cap. Specimens tested were of mild, pleasant flavor. =H. sphæro´sporus= Pk. =Pileus= fleshy and thick in the center, sub-obconic, convex, obtuse or slightly umbonate, whitish, inclining to reddish-brown, the margin incurved. =Flesh= firm, white. =Gills= rather broad, subdistant, adnate or slightly decurrent, white. =Stems= tufted, flexuous, solid, glabrous, often slightly thickened at the base, colored like the pileus. =Spores= globose, 6–8µ broad. =Pileus= 6–12 lines broad. =Stem= 1–2 in. long, 2–3 lines thick. Iowa. October. Communicated by C. McIlvaine. The fresh plant is said to have no decided odor, but when partly dried it emits a slight but rather unpleasant odor. It belongs apparently to the section Camarophyllus, and is related to Hygrophorus Peckii. _Peck_, Torr. Bull., Vol. 22, No. 12. Received by the writer from Hon. Thomas Updegraff, MacGregor, Iowa, and forwarded to Professor Peck as a new species. The fungus has but slight taste and is without odor when fresh. It is probably edible. Not received in sufficient quantity to test.