The Botany of Iceland - 01.12.1932, Qupperneq 103

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—16 X 7—8.5/c — Cystidia
hairshaped with swollen hase.
582. P. arata Berkeley, Outlines of Br. Fungology, p. 176.
Akureyri [C. O. H.], det. E. Rostrup. — On moist sandy soil near Glerá.
Rostrup’s name P. atrata is incorrect, perhaps a misprint.
Lactariaceae.
Lactarius Fries.
583. L. tabidus Fries, Epicr., p. 346.
Hallormstaðir [P. L.J. — 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 slightlj' mealy. —
Gills rather distant, adnate, pale incarnate (e 7). — Spores white, echi-
nate, almost spherical 8—9X7—8 ju.
584. L. glyciosmus Fries, Epicr., p. 348.
Hallormstaðir, Eyjafjörður [P. L.]. — On the shore at Glerá 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 f 8—-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 /t. 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.
Egilsstaðir [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 /(.
586. L. uvidus Fries, Epicr., p. 338.
Eyjólfsstaðir [P. L.]. — In birch copses.
Milk acrid, turns violet like the flesli. —
Pileus 3—7 cm broad