The Botany of Iceland - 01.12.1942, Qupperneq 241

THE PTERIDOPHYTA AND SPERMATOPHYTA OF ICELAND
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E.S.I.; from northernmost Scandinavia southward. Caucasus.—Asia: Siberia to
Kamchatka, Persia, northern China, Hokkaido.—N. Afr., Madeira.
213. Ranunculus reptans Linn., Sp. pl. ed. I (1753) p. 549.
K. & M., 1770, p. 208.—Babington, 1871, p. 291.—Gronlund, Isl. Fl., 1881,
p. 51.-—Stefánsson, Fl. ísl., ed. 1, 1901, p. 97.—Ibid., ed. 2, 1924, p. 108.—
O. & Gr., 1934, p. 67.
Flora Dan. tab. 108.
Icelandic: Liðaskriðsóley Flagasóley. Danish: Krybende Ranunkel. English: Creep-
ing Crowfoot.
Common in all parts, also from some localities in the interior highland: Hvítar-
vatn and Hveravellir (J.Gr., 1934).
When growing in deep water the leaves become linear, and the creeping stems
may sometimes reach a length of about one meter.
Life-form: H and HH (Hydrophyte).
On sandy and stony or clayey shores of lakes, often submerged in ponds, in ditches,
in small mossy depressions.
Flor. VII—VIII; fr. mat. VIII.
Max. length of shoots: 16 cm; average: 10 cm.
Geogr. area: Am. : Newfoundland to Alaska, southward to Pennsylvania and New
Mexico.—Greenl.: W. 60°—70°28'. E. 65°38'.—Eur.: Fær.; E.S.; northemmost
Scandinavia to Switzerland and central Russia. Novaya Zemlya.—Asia: Throughout
Siberia, Kamchatka, Honshu.
214. Ranunculus trichophyllus Chaix var. eradicatus (Laestadius)
W. B. Drew in Rhodora, Vol. 38 (1936) p. 33.
R. aquaticus, K. & M., 1770, p. 208.—R. aquatilis Linn., Babington, 1871,
p. 291.—Batrachium Drouetii Nyman, Gronlund, Isl. Fl., 1881, p. 52.—B.
heterophyllum Fr., Rostrup, 1887, p. 177.—B. paucistamineum (Tausch)
Gelert var. eradicata Læstad., Stefánsson, Fl. Isl., ed. 1, 1901, p. 97.—B.
trichophyllum (Chaix) Bosch, var. eradicata Læstad., Ibid., ed. 2, 1924,
p. 109.—R. paucistamineus Tausch var. eradicata Læstad., O. & Gr., 1934,
p. 66.
Flora Dan. tab. 2777 (B. confervoides Fr.).
Icelandic: Lónasóley. Danish : Haarfliget Vandranunkel.
Recorded from Iceland under various names, it would seem, however, that the
specimens collected can all be placed under the var. eradicatus (Laestadius) Drew.—
The very varying nature of the habitats is evidently in the first place responsible
for the pronounced difference in the stature and development of the various
specimcns.
Very frequent in most parts, in the lowland as well as the central highland.
Life-form: HH (Hydrophyte).
In smaller lakes, ponds, ditches, brooks, etc.
Flor. VII—VIII ; fr. mat. VII—VIII.
Max. lcngth of shoots : 40 cm ; average : 15 cm.
Geogr. area: Am.: Labrador, Newfoundland, Alaska ; northern Wyoming.—Greenl.: