The Botany of Iceland - 01.12.1942, Blaðsíða 333

THE PTERIDOPHYTA AND SPERMATOPHYTA OF ICELAND
331
Fig. 148. Galeopsis Tetrahit L.—Double rings: Ajuga pyramidalis L.
Icelandic : Hjálmgras. Danish : Almindelig Hanekro. English : Common Hemp-nettle.
Rather frequent in S. and S.W., otherwise rare. Not found in E. and N.W.
Perhaps in most cases accidentally introduced with foreign seeds, but may be
regarded as naturalized in S. and S.W. See fig. 148.
Life-form : Th.
Weed on cultivated ground, especially in potato-fields. On grassy slopes, herb-slopes;
near hot springs.
Flor. VII; fr. mat. VIII.
Max. height: 40 cm; average : 21 cm.
Geogr. area: N. Am. : (naturalized from Europe). Newfoundland to Brit. Columbia
and Alaska; southward to N. Carolina.—Eur.: Fær.; E.S.I.; from northern Scan-
dinavia (about 71° N. lat.) southward throughout most of Europe. Caucasus.—
Asia: Ural, Siberia, Manchuria, Korea, Japan; N.W. India.
Lamium album Linn.
Hjaltalín, 1830, p. 227,—Baring-Gould, 1863, p. 431,—Babington, 1871, p. 322.
Entered in Hjaltalín’s Grasafræði, loc. cit., and Baring-Gould, loc. cit., records
it from Hnausar within Húnafjörður, N. A specimen found at Varmahlíð in Skaga-
fjörður (G. Gígja, 1937) measured up to 20 cm, and was in flower on July 20th.
Steindórsson (1939, p. 34) records it from Sauðárkrókur in Skagafjörður. Not
naturalized in Iceland.
345. Lamium amplexicaule Linn., Sp. pl. ed. I (1753) p. 579.
Vahl, 1840, p. 373.—Babington, 1871, p. 322.—Gronlund, Isl. Fl., 1881,
p. 71.—Stefánsson, Fl. ísl., ed. 1, 1901, p. 180.—Ibid., ed. 2, 1924, p. 204.—
O. & Gr., 1934, p. 117.