The Botany of Iceland - 01.12.1932, Page 96

544
POUL LARSEN
dilated, hollow, curved, 3—4 cm long, 2—2.5 mm thick, pale above and
covered witli the floccose remains of Ihe veil, brown below. — Gills crowded,
broadly adnate, edge of gills crenulate and íimbrillate, clay-coloured (k 2).
— Spores brown, smooth, ellipsoidal, with an oblique apiculus below,
9—10X5 ft. — Edge of gills beset with sterile cylindrical cells, 6—8 [x
broad.
556. N. sp.
Laxárdalur near Mývatn [P. L.]. — Among moss in sandy meadows.
Pileus 10—16 mm broad, at íirst 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 h 1 and h 2), tawny when dry (e 3), the margin of
the cap sometimes crenulale 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 abovc 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—11X5.5—6.4 [1. — Edge of gills
and upper part of stipe beset with 50 p, long, conical cystidia, 3—4 f.i
broad above, and c. 10 [i broad below, at length with tawny contents.
Galera Fries.
557. G. tenera (Schaeffer) Fries.
Agaricus tener Schaefl'er, Fung. Ic., t. 70, f. 6—8.
Seyðisfjörður, 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—X6—6.5 /u.
— Cystidia at edge of gills flask-shaped with a spherical head, 5 fi in
diameter, with a 2 fi long pedicel.
558. G. sp.
Hallormstaðir, Akureyri [P. LJ. — Littoral flelds 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 (1 6), broad at the margin of cap, rounded
towards the stipe, narrowly adnate, edge white and íimbrillate. — Spores
ellipsoidal, smooth, with a distinct germ pore, yellow, 12—13 > 6—6.5 [á,.