The Botany of Iceland - 01.12.1932, Blaðsíða 75

FUNGI OF ICELAND
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481. H. niveus (Scopoli) Fries, Hym. Eur., p. 414.
Seyðisfjörður [P. L.]. — Among grass in a homefield.
Cap plano- convex, umbilicately depresssed, white, hygrophanous,
when moist pellucidly striate at margin. Stipe hollow, white, dilated
above. Gills thin, white, distant, arcuate-decurrent. Spores white, sub-
cylindrical, 8X4—5 ju.
Agaricaceae.
Clitocybe Fries.
482. C. gilva (Persoon) Fries, Hym. Eur, p. 95.
Agaricus gilvus Persoon, Synops. meth. fung., p. 448.
Seyðisfjörður [P. L.]; Dvrafjörður [C. H. 0.]. — In grass on mountain
slopes among Betula nana and Salix herbacea.
Cap 5—8 cm broad, plano-convex, depressed at centre, in damp weather
yellowish brown (g 2), in the dry state greyish yellow (k 4), margin in-
volute, mealy and sulcate. Flesh pale yellow (k 1 to k 2), stipe cylin-
drical, stuffed, at length hollow, 8 cm high, 8—15 mm thick, pale yellow
(k 2), even and naked, but enveloped in white hairs at base. Gills narrow,
crowded, decurrent, furcate below, creamcoloured (k 1). Spores white,
ovoid, 5X3—4 fx.
483. C. odora (Bulliard) Fries, Hym. Eur., p. 85.
Agaricus odorus Bulliard, 1791, t. 556, flg. 3.
Eyjolfstaðir (near Grimsá) [P. L.]. — Under birches.
Cap 4—6 cm broad, plano-convex, fleshy and flrm, naked, greyish
green (b 1 to b 3). Flesh pallid, smells strongly of anis. Stipe pale
greyish green (e 1), somewhat inllated and hollow, at base with strongly
decurrent and interwoven hyphæ. Gills white or the same colour as the
stipe, broad, distant, only decurrent by a tooth. Spores white ellipsoidal,
6X4 /u.
484. C. tornata Fries.
Agaricus tornatus Fries, Hym. Eur., p. 87.
Hallormstaðir [P. L.]. — In a birch copse.
Cap 3—6 cm broad, convex, occasionally somewhat gibbous, not
hygrophanous, white and covered with a white mealy layer, in age with
deep cracks in the flesh of cap, becoming alutaceous. Stipe short, of
unequal thickness, dilated now at apex, now at base, stuffed, white.
Gills narrow, crowded, white, adnate, only decurrent by a tooth. Spores
white, small, 4—5X2 fi.
485. C. dealbata (Sowerby) Fries, Syst. Myc. I, p. 92.
Agaricus dealbatus Sowerby, Coloured Fig. of English Fungi, London
1797—1805, t. 123.
Seyðisfjörður [P. L.]. — In a homefield.