The Botany of Iceland - 01.12.1942, Síða 267
THE PTERIDOPHYTA AND SPERMATOPHYTA OF ICELAND
265
Eur.: E.S.I.; from Scandinavia southward to the Mediterranean Sea; Spitsbergen,,
Novaya Zemlya, Alps, Karpathians, Caucasus.—Asia: Along the north coast, south-
ward to the mountains of Armenia; Kashmir, Himalaya.
249. Saxifraga hypnoides Linn., Sp. pl. ed. I (1753) p. 405.
K. & M., 1770, p. 207.— ? S. þalmata, Hooker in Mackenzie, 1811, p. 422.—
S. hyþnoides L., Babington, 1871, p. 307.—Gronlund, Isl. Fl., 1881, p. 56.—
Stefánsson, Fl. ísl., ed. 1, 1901, p. 123.—Ibid., ed. 2, 1924, p. 139.—O. &
Gr., 1934, p. 85.
Flora Dan. tab. 348.—Engler & Irmscher Saxifragaceae, in Pflanzenreich IV,
117, fig. 78, B—O, 79.
Icelandic: Mosasteinbrjótur. Danish: Mos-Stenbræk. English: Mossy Saxifrage.
Common in the lowland. Only found in few places in the central highland.
According to Engler & Irmscher, Pflanzenreich, loc. cit., 343 et seq., the Ice-
landic plant may be placed under the subspecies bor.eali-atlantica Engl. & Irmsch.,.
characterized as follows:
Plant rather dense or loosely caespitose, with procumbent or ascendant branches.
Gemmae, if present, less rigid, more herbaceous, with scales less appressed at their
apex. Basal leaves long or short petiolate, leaf-blades less deeply 3—5-partite, the
lobes scarcely divaricate but + forward-extended.
f. rosiflora (Stefánsson), with reddish petals is occasionally met with.
Life-form: Ch.
In screes, on loose gravelly soil, amongst mosses, on damp rocky ledges.
Flor. VI—VIII; fr. mat. VII—VIII.
Max. height: 20 cm; average: 8 cm.
Geogr. area: (var. boreali-atlantica) Eur. : Fær.; E.S.; Norway, northern France,,
Belgium, the Vosges, Fichtelgebirge.—Am. : Quebec? (introduced).
250. Saxifraga nivalis Linn., Sp. pl. ed. I (1753) p. 401.
K. & M., 1770, p. 207.—Babington, 1871, p. 309.—Gronlund, Isl. Fl., 1881,
p. 53.—Stefánsson, Fl. ísl., ed. 1, 1901, p. 126.—Ibid., ed. 2, 1924, p. 142.—
O. & Gr., 1934, p. 84.
Flora Dan. tab. 28.
Icelandic: Snæsteinbrjótur. Danish: Sne-Stenbræk. English: Sengreen, White
Mountain Saxifrage.
Common in all parts; in the lowland as well as in the central highland, but most
frequent at a higher level.
var. tenuis Wg., smaller, up to 10 cm high, nearly glabrous, with fewer flowers on
longer stalks and usually -p reddish-tinged, found in some places in E. and N.
By some authors this variety is regarded as a separate species (cp. Lindman,.
Svensk Fanerogamflora (1918) p. 325).
Life-form : H.
In fell-field, rock-crevices, and on damp rock-ledges, in moist gravelly soil.
Flor. VI—VII; fr. mat. VI—VIII.
Max. height: 20 cm; average: 6 cm.
Geogr. area: Am. : From Labrador to Unalaschka along the north coast. Arctic Archi-
Pelago.—Greenl.: W. 60°4'—78°37'. E. 60°—79°30'.—Eur.: Fær.; E.S.I.; central