544 POUL LARSEN 
dilated, hollow, curved, 3—4 cm long, 2—2.5 mm thick, pale above and 
covered with the floccose remains of the veil, brown below. — Gills crowded, 
broadly adnate, edge of gills crenulate and fimbrillate, clay-coloured (k 2). 
— Spores brown, smooth, ellipsoidal, with an oblique apiculus below, 
9—10X 5 u. — Edge of gills beset with sterile cylindrical cells, 6—8 u 
broad. 
556. N. sp. 
Laxärdalur near Myvatn [P.L.]. — Among moss in sandy meadows. 
Pileus 10—16 mm broad, at first convex, margin incurved with a 
white fibrous veil, hygrophanous, pellucidly striate at margin, then 
plane or somewhat depressed, sometimes umbonate, chestnut-coloured 
when moist (between h1 and h 2), tawny when dry (e 3), the margin of 
the cap sometimes crenulate and showing remains of the white veil. — 
The stipe terete, hollow, concolorous, cylindrical or slightly dilated at base 
and clothed with white hyphæ, densely pubescent above with projecting 
short hyphæ. — Gills slightly ventricose, rounded adnate, edge denticu- 
late, darker brown than the face which has the colour g 2. — Spores 
ovoid, pale yellowish brown, punctate, 8—11%*5.5—6.4 u. — Edge of gills 
and upper part of stipe beset with 50 u long, conical cystidia, 3—4 u 
broad above, and c. 10 u broad below, at length with tawny contents. 
Galera Fries. 
557. G. tenera (Schaeffer) Fries. 
Agaricus tener Schaeffer, Fung. Ic., t. 70, f. 6—8. 
Seydisfj6rdur, Akureyri [P. L.]. 
Pileus 1—3 cm broad, conico-campanulate, hygrophanous, margin 
pellucidly striate, tawny in the fresh and moist state (k 6), paler when 
dry. Flesh concolorous, thin skin-like, brittle. — Stipe cylindrical, base 
bulbous, minutely striate-sulcate, hollow, rigid, brittle, pale above, rusty 
below. — Gills tawny (g 3), ascending, narrow, crowded, adnate. — 
Spores brown, smooth, ellipsoidal, germ pore distinct, 12— X 6—6.5 u. 
— Cystidia at edge of gills flask-shaped with a spherical head, 5 u in 
diameter, with a 2 u long pedicel. 
558. G. sp. 
Hallormstadir, Akureyri [P.L.]. — Littoral fields and farm- yards. 
Grows directly on cow-dung. 
Pileus 1—1.5 cm broad, hemispherical, with thin flesh, hygrophanous, 
margin pellucidly striate, viscid and brown when moist (e 3), somewhat 
shining and almost white when dry (e 5). — Stipe short (2—2.5 cm long, 
1—2 mm thick), slightly swollen at base and as a rule curved, striate 
above, everywhere mealy and floccose. — Gills at first pale, almost white, 
then tawny with a red tinge (16), broad at the margin of cap, rounded 
towards the stipe, narrowly adnate, edge white and fimbrillate. — Spores 
ellipsoidal, smooth, with a distinct germ pore, yellow, 12—13 » 6—6.5 u. 
