FUNGI OF ICELAND 523 
481. H. niveus (Scopoli) Fries, Hym. Eur. p. 414. 
Seydisfjördur [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 u. 
Agaricaceae. 
Clitocybe Fries. 
482. C. gilva (Persoon) Fries, Hym. Eur, p. 95. 
Agaricus gilvus Persoon, Synops. meth. fung., p. 448. 
Seydisfjördur [P. L.]; Dyrafjérdur [C. H. O.]. — 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 u. 
483. C. odora (Bulliard) Fries, Hym. Eur., p. 85. 
Agaricus odorus Bulliard, 1791, t. 556, fig. 3. 
Eyjolfstadir (near Grimsä) [P. L.]. — Under birches. 
Cap 4—6cm broad, plano-convex, fleshy and firm, naked, greyish 
green (b 1 to b 3). Flesh pallid, smells strongly of anis. Stipe pale 
greyish green (e 1), somewhat inflated and hollow, at base with strongly 
decurrent and interwoven hyphe. 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. 
Hallormstadir [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 u. 
485. C. dealbata (Sowerby) Fries, Syst. Myc. I, p. 92. 
Agaricus dealbatus Sowerby, Coloured Fig. of English Fungi, London 
1797—1805, t. 123. 
Seydisfjöröur [P. L.). — In a homefield. 
