The Botany of Iceland - 01.12.1942, Blaðsíða 255

THE PTERIDOPHYTA AND SPERMATOPHYTA OF ICELAND
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into the nursery in Akureyri (I.Ó., 1932, p. 30). It should be excluded from the
Icelandic Flora.
Lepidium perfoliatum Linn.
Found at Sauðárkrókur, N. (G.M., 1893) with nearly ripe pods (in September).
Accidentally introduced.
Lepidium ruderale Linn.
Found by Stefánsson 1889 at Kornsá, N., with nearly ripe pods (2.IX) ; in H.H.
Accidentally introduced.
Raphanus Raphanistrum Linn.
Gronlund, Isl. FL, 1881, p. 48.—Stefánsson, Fl. ísl., ed. 1, 1901, p. 103.—Ibid.,
ed. 2, 1924, p. 115.—O. & Gr., 1934, p. 69.
Occurring as an accidentally introduced weed; found in some few places:
Kornsá, N. (St.St., 1889), Reykjavík, S.W. (C.G., 1876). Hafnarfjörður, S.W.
(Jóh. Sigfusson, 1886).
Raphanus sativus Linn.
Stefánsson, Fl. ísl., ed. 1, 1901, p. 103.-—Ibid., ed. 2, 1924, p. 116.—O. & Gr.,
1934, p. 69.
Cultivated in Gardens.
233. Rorippa islandica (Oed.) Schinz et Thellung, in Vierteljahrsschr.
Nat. Ges. Ziirich, LIII (1908) p. 538.
Sisymbrium sylvestre, K. & M., 1770, p. 209.—Sisymbrium islandicum, Mohr,
1786, p. 200.—S. terrestre, Hooker in Mackenzie, 1811, p. 425.—S. palustre
s. islandicum, Hjaltalín, 1830, p. 241.—Nasturtium pal. DC. & N. amphibium
(R.Br.), Lindsay, 1861, p. 28.—N. pal. DC., Babington, 1871, p. 293.—N. pal.
Fig. 100. Rorippa islandica (Oed.) Sch. & Thell.