FUNGI OF ICELAND 527 
Stipe cylindrical, 6—7 cm long, 2 mm thick, cartilaginous, brown, but 
covered with greyish white fibres; gills broad, distant, rather thick and 
rigid, strongly rounded towards the stem, almost free, grey, then incar- 
nate. Spores very variable in shape, sometimes polygonal, sometimes 
oblong and irregularly angular, drawn out below into an oblique apiculus, 
9—11X8 u. 
Mycena Fries. 
497. M. avenacea Fries, sensu Schroeter, Die Pilze Schlesiens I, p. 638. 
Agaricus avenaceus Fries, Systema mycologicum I, p. 150. 
Seydisfjördur [P. L.]. — On and among grassy knolls in outfields. 
Cap 1—15 cm broad, conic-campanulate, margin pellucido-striate, 
greyish brown (g 6), darker at centre. Stipe 4—5 cm long, 1—2 mm thick, 
hollow, tough, shining, pale, finally greyish yellow (k 2). Gills distant, 
white, brown-rimmed. Spores ellipsoidal, smooth, white, 12X5—6 u. Edge 
of gills closely beset with flaskshaped cystidia with brown contents. 
Marasmius Fries. 
498. M. Vaillantii (Persoon) Fries, Epier. p. 380. 
Dvrafjöröur, Pingeyri [C. H. O.) det. E. Rostrup. 
499. M. insititius Fries, Epicr. p. 386. 
Hof in Hörgärdalur [O. D.] det. E. Rostrup. 
Tricholoma Fries. 
500. T. gambosum Fries. 
Agaricus gambosus Fries, Syst. Myc. I, p. 50. 
Fnjöskadalskögur [C. H. O.]. 
501. T. pubifolium Romell, Hymenomycetes of Lappland, pp. 2 and 3. 
Hallormstadir, Mödrudalur, Reykjahlid and Skütustadir [P. L.]. 
Cap 4—7 cm broad, campanulate, obtusely gibbous margin involute, 
centre palely ochraceous (k 2), the rest white, the whole surface (under 
the lens) minutely and densely pubescent, which gives the cap a dull 
appearance. Flesh thick and white, with no special scent or flavour. 
Stipe 6—7 cm long, 1—2 cm thick, cylindrical with somewhat swollen base, 
stuffed, white, assumes a brownish tinge when touched, densely mealy 
at apex, the rest smooth. Gills narrow, crowded, emarginate, white with 
transverse stripes. Spores ellipsoidal, white or a faint brown, 1-guttulate 
9—115—6 u. 
T. pubifolium deviates from T. gambosum, which it resembles most, 
by the absence of the mealy odour and flavour and by the much larger 
spores. 
502. T. panaeolum Fries, Epicr., p. 49. 
Hjardarholt and Laugarnes [P. L.)|. — On grassy spots in heaths 
and bogs. 
