FUNGI OF ICELAND 551 
Stipe 4 cm high, 1 mm thick, white, flexuose, hollow, mealy at apex, 
base often dilated. — Gills grey, then dark with light edges, ventricose, 
adnate. — Spores black, ellipsoidal, smooth, 13—16X7—8.5 u. — Cystidia 
hairshaped with swollen base. 
582. P. arata Berkeley, Outlines of Br. Fungology, p. 176. 
Akureyri [C. O. H.), det. E. Rostrup. — On moist sandy soil near Glerä. 
Rostrup’s name P.atrata is incorrect, perhaps a misprint. 
Lactariaceae. 
Lactarius Fries. 
583. L. tabidus Fries, Epicr., p. 346. 
Hallormstadir [P.L.). — Under birches and willows. 
Milk white, somewhat pungent. Pileus c. 2 cm broad, plano-convex, 
slightly umbonate, sometimes uneven, rugulose, margin thin, pellucidly 
striate, when moist reddish brown (j 2), paler when dry. — Stipe cylin- 
drical, slightly dilated at base, reddish-brown, often slightly mealy. — 
Gills rather distant, adnate, pale incarnate (e 7). — Spores white, echi- 
nate, almost spherical 8—9X7—8 u. 
584. L. glyciosmus Fries, Epicr., p. 348. 
Hallormstadir, Eyjafjördur [P. L.). — On the shore at Glerä and in 
birch copses. 
Milk white or watery, sparse. — Pileus c. 5 cm broad, plano-convex, 
more or less depressed in the centre, with an acute or rounded umbo. 
Margin incurved, violet-grey (a 5), surface f8—g 7. — Stipe cylindrical, 
pale reddish yellow (k 4), covered with a greyish-white mealy coating. — 
Gills at first white, then pale reddish yellow (k 1—k 3), broadly adnate 
or somewhat decurrent, not branched. — Spores faintly yellow, echinate- 
verrucose, somewhat angular, 8—8.5X7 u. Flesh pale reddish yellow (k 2), 
smells like cinnamon. 
585. L. lilacinus (Lasch) Fries, Hym. Eur., p. 435. 
Agaricus lilacinus Lasch, Linnaea III, No. 78. 
Egilsstadir [P.L.]. — In birch copses, meadows and bogs. 
Milk white, acrid. — Pileus 4—7 cm broad, plano-convex, then de- 
pressed in the centre about a small umbo, at first slightly tomentose, 
then rimose and almost squamose, lilac-incarnate (n 7), turning brown- 
violet (j 3). Flesh of cap tinged with red. — Stipe cylindrical, reddish 
yellow to ochre (k 3), apex mealy. — Gills coloured like the cap, some- 
what decurrent. — Spores with a yellowish tinge, subspherical, echinate, 
7.5—8.5 u. 
586. L. uvidus Fries, Epicr., p. 338. 
Eyjölfsstadir [P. L.|. — In birch copses. 
Milk acrid, turns violet like the flesh. — Pileus 3—7 cm broad 
