The Botany of Iceland - 01.12.1932, Qupperneq 91

FUNGI OF ICELAND
539
by a white fibrillose velum, as a rule forming a ring. — Gills 2—3 mm
broad, adnate in their entire breadth or somewhat emarginate, tawny (1 3),
then cinnamon-brown. — Spores brown, punctate, varying in size, but
on the whole rather small, 6—8.5X3—4.5 fi.
537. C. (Telamonia) gentilis Fries, Epicr., p. 297.
Eyolfsstaðir [P. L.]. — In birch copses.
Pileus 2.5—4 cm broad, conico-campanulate, acutely umbonate, hygro-
phanous, tawny (k 3), shining, along margin covered with the remains
of the pure yellow or citron-yellow veil, for the rest naked and glabrous,
when dry the whole cap is pale yellow. — Stipe cylindrical, hollow,
5—8 cm long, 3—4 mm thick, internally and externally coloured like the
cap and covered with a yellow velum forming a ring. — Gills thick,
distant, obtusely adnate, at first yellow (1 5), then cinnamon. — Spores
broadly eilipsoidal, punctate, brown, 8—8.5X5.5—6 fi.
538. C. (Telamonia) biformis Fries, Epicr., p. 299.
Egilsstaðir [P. L.]. — In birch copses.
Pileus 5—7 cm broad, at first convex, then expanded, obtusely umbo-
nate, but slightly hygrophanous, brown, covered only along inargin with
white fibres. Flesh thin except at centre, brownish. — Stipe cylindrical,
pale, white velum covering the surface to the oblique ring terminating
in a brownish edge. — Gills broad, rather crowded, emarginate, edge of
gills undulate-dentate, at first grey then cinnamon. — Spores ellipsoidal,
brown, slightly punctate, 8—9 X 4—5 jx.
Grows in dense clusters round the base of birches.
539. C. (Telamonia) helvolus (Bulliard) Fries, Epicr., p. 296.
Reykjahlíð (Mývatn) [P. L.]. — In birch copses on lava fields.
Pileus 3—6 cm broad, soon flatly expanded and somewhat depressed
about the low rounded umbo, hygroplianous, brown, at length radiately
broken up into fibres like an Inocybe. — Stipe cylindrical with some-
what dilated base, covered by an at first white, then brown velum forming
a ring, medullated, at length liollow, internally, and frnally externally,
brown. — Gills fairly distant, thick, emarginate, cinnamon. — Spores brown,
somewhat almond-shaped, sharply punctate, 8—10X5—6//.
540. C. (Telamonia) bulbosus (Sowerby) Fries, Epicr., p. 292.
Agaricus bullosus Sowerby, t. 130.
Hallormstaðir [P. L.]. — In birch copses.
Pileus 5 — 7 cm broad, campanulate, with projecting, broad and
rounded umbo, margin incurved and fibrous fimbrillate, only slightly hygro-
phanous, brown (k 6 to k 7), flesh thick, especially at centre. — Stipe
5—7 cm long, bulbous, covered by a .white, fibrous velum. Flesh of stipe
pale brown or white, but of the bulb saffron-yellow. — Gills broad, adnate,
dark brown, then cinnamon. — Spores ellipsoidal, brown, punctate, 8—9
X 5-5.5 fi.