The Botany of Iceland - 01.12.1942, Síða 274
JOHS. GRONTVED
272
261. Dryas octopetala Linn., Sp. pl. ed. I (1753) p. 501.
K. & M., 1770, p. 208.—Babington, 1871, p. 303.—Gronlund, Isl. Fl., 1881,
p. 24.—Stefánsson, Fl. ísl., ed. 1, 1901, p. 136.—Ibid., ed. 2, 1924, p. 153.—
O. & Gr., 1934, p. 89.
Flora Dan. tab. 31.
Icelandic: Rjúpnalauf, Holtasóley. Danish : Rypelyng. English : Mountain Avens.
Common in all parts, in the lowland as well as the central highland ; often in
abundance and forming Dryas-heaths.
The var. argentea A. Blytt, with a silvery white cover of hairs on both surfaces
of the leaves, is very rare, only recorded from Grímsstaðir at Mývatn (Ó.D.).
Life-form: Ch.
In heaths and moors, lava fields, fell-field, etc.
Flor. V—VIII; fr. mat. VI—VIII.
Max. height: 11 cm ; average : 5 cm.
Geogr. area: North coast of Alaska southward to Colorado.—Greenl.: W. 76°—80°.
E. 69°5'—79°30'.—Eur.: Fær.; E.S.I.; Scandinavian mts., arctic Russia, Ural, Spits-
bergen, Novaya Zemlya, Pyrenees, Alps.—Asia: Arctic Siberia to the Chukchee
Peninsula, southward to Altai mts. and N. Mongolia, Honshu, Kamchatka.
262. Filipendula Ulmaria (L.) Maxim., Acta Hort. Petropol. 6 (1879)
p. 251.
Sþiraea Ulmaria, K. & M., 1770, p. 208.—Babington, 1871, p. 302.—Gren-
lund, Isl. FL, 1881, p. 22.—Stefánsson, Fl. ísl., ed. 1, 1901, p. 130.—Ibid.,
ed. 2, 1924, p. 146.—Filiþendula Ulmaria L., O. & Gr., 1934, p. 87.
Flora Dan. tab. 547.
Fig. 111. Filiþendula Ulmaría (L.) Maxim.