The Botany of Iceland - 01.12.1942, Page 334

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JOHS. GRONTVED
Flora Dan. tab. 752.
Danish: Liden Tvetand. English : Hen-bit, Lion’s-snap.
Very rare. Originally accidentally introduced, but now perhaps to be regarded
as naturalized. Recorded by Vahl, loc. cit., and collected by Steenstrup 1840—41,
without locality; later on found in various places, see fig. 149. At Hraungerði in
Flói, S., it has, according to Steindórsson (1931b, p. 42) been growing for many
years as a weed in old potato-fields.
Life-form : Th.
In cultivated areas.
Flor. VII—VIII; fr. mat. (VIII).
Max. height: 25 cm; average: 15 cm.
Geogr. area: N. Am. (naturalized from Eur.).—Eur.: E.S.I. ; Scandinavia from
68° N. lat., southward throughout most of Europe.—Western Asia and Himalaya to
Syria and Palestine. Japan (introduced).—N. Afr. and Canary Islands.
Lamium hybridum Vill. emend. Gams, subsp. intermedium (Fries) Gams, 111. Flora
von Mitt.-Eur. V, 4, p. 2455.
L. intermedium Fr., Stefánsson, Fl. tsl., ed. 1, 1901, p. 180.—Ibid., ed. 2, 1924,
p. 204,—O. & Gr., 1934, p. 117.
Exceedingly rare, as yet found only in two places, Skriða in Hörgárdalur, N.,
and Vestmannaeyjar, S. Accidentally introduced as a weed in fields and gardens; at
Skriða it has been growing for many years in an old kale-yard. Stefánsson seems to
regard it as naturalized in Iceland.
Lamium purþureum Linn.
K. & M., 1770, p. 208.—Baring-Gould, 1863, p. 431,—Babington, 1871, p. 322.—
Gronlund, Isl. Fl., 1881, p. 70.—Stefánsson, Fl. ísl., ed. 1, 1901, p. 180.—Ibid.,
ed. 2, 1924, p. 204,—O. & Gr., 1934, p. 118.