The Botany of Iceland - 01.12.1942, Qupperneq 215

THE PTERIDOPHYTA AND SPERMATOPHYTA OF ICELAND
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Geogr. area : Am.: (naturalized from Eur.).
Throughout N. Am., except the extreme
north. S. Am.—Eur.: Fær. (introd.) ; E.S.I.;
from Lapland southward throughout Eur.,
Caucasus.—Asia: Siberia, central Asia,
India.—N. Africa.
173. Polygonum viviparum Linn.,
Sp. pl. ed. I (1753) p. 360.
K. & M., 1770, p. 207.—Babington,
1871, p. 325.—Gronlund, Isl. Fl.,
1881, p. 86.—Stefánsson, Fl. ísl., ed.
1, 1901, p. 79.—Ibid., ed. 2, 1924,
p. 91,—O. & Gr., 1934, p. 55.
Flora Dan. tab. 13.
Very common in the lowland as well as
the highland ; to be found as far up in the
hills as vegetation is met with. Usually the
individuals have both bulbils and flowers.
Icelandic: Kornsúra, Túnblaðka. Danish:
Topspirende Pileurt. English : Alpine Bistort,
Snake-weed.
Life-form: G.
In heaths, pastures, home-fields, Salix copses, slopes, screes, moors, meadows, fell-
field, etc., high up in the hills.
Flor. VI—VII; fr. mat. VII—VIII.
Max. height: 30 cm ; average : 12 cm.
Geogr. area: Am.: Labrador to Alaska, southward to New Mexico and New Hamp-
shire.—Greenl.: Circumgreenlandic.—Eur.: Fær.; E.S.I. ; Scandinavia, central Eur.
alpine regions, Caucasus. Spitsbergen, Novaya Zemlya, Jan Mayen.—Asia: Arctic
coast, southward to Asia Minor, Pamir, Himalaya. Korea, Honshu.
174. Rumex Acetosa Linn., Sp. pl. ed. I (1753) p. 337.
K. & M., 1770, p. 206.—Babington, 1871, p. 325.—Gronlund, Isl. Fl., 1881,
p. 85.—Stefánsson, Fl. ísl., ed. 1, 1901, p. 77.—Ibid., ed. 2, 1924, p. 88.—
O. & Gr., 1934, p. 55.
Flora Dan. tab. 2534.
Icelandic: Vallarsúra, Túnsúra, Blöndustrokkur. Danish: Almindelig Syre. English:
Sorrel, Sour Grass.
Common in all parts, in the lowland as well as the central highland.
In favourable localities as for instance in crevices in the lava-fields there may
occur specimens which attain a height of about 70 cm, and with leaves measuring
up to 17 cm in length. (See also H.J., 1899, p. 191).
Life-form: H.
On grassy slopes and herb-slopes in pastures and home-fields, lava fields, fell-field.
r!°r' VI~Vn (VIII) ; fr. mat. VIII.
ax. height: 70 cm; average: 20 cm.
Geogr. area: Am.: From Labrador to Alaska, southward to Montana and Penn-