The Botany of Iceland - 01.12.1942, Blaðsíða 206

204
JOHS. GRONTVED
Life-form : Ch.
In gravelly, humous and moderately damp soil; in damp depressions in the lava-
fields, in moors, heaths, screes; moss-heaths, Gnmmia-heaths.
Flor. V—VI; fr. mat. VI—VIII.
Max. height: 5 cm; average: 2 cm.
Geogr. area: Am.: Arctic and alpine northeastern N. Am.—Greenl.: W. 60°—77°47'.
E. 60°4'—76°45'.—Eur. : Fær.; E.S.I.; Scandinavia, Finland, N. Russia (alpine).
Pyrenees, Alps, Karpathians. Jan Mayen, Spitsbergen.—Asia: Himalaya?.
Salix herbacea X S. lanata.
(?) S. ovata, Ser., Babington, 1871, p. 328.—S. herbacea X S. lanata, Strömfelt,
1885, p. 116.—E. Rostrup, 1887, p. 181.-—H. Jónsson, 1896, p. 336.—(?) S. sar-
mentacea Fr. -f- var. rotundijolia And. and S. ovata Ser., Gronlund, Isl. Fl., 1881,
p. 90.—S. herbacea X S. lanata, Stefánsson, Fl. Isl., ed. 1, 1901, p. 72.—Ibid., ed. 2,
1924, p. 82.—O. & Gr., 1934, p. 51.
This hybrid was first recorded from Icel. by Babington, loc. cit., under the name
Salix ovata Ser., and later on found by Strömfelt, loc. cit., and by him recognized
as the hybrid S. herbacea X S. lanata.
The hybrid is exceedingly variable with respect to stature and size, and in the
form and crenation of the leaves, as well as the pubescence. It seems to be very
frequent throughout Iceland and grows in nearly the same localities as S. herbacea.
162. Salix lanata Linn., Sp. pl. cd. I (1753) p. 1019.
K. & M., 1770, p. 211.—S. chrysanthos and S. lanata, Gliemann, p. 149.—
S. lanata L., Babington, 1871, p. 328.—Gronlund, Isl. Fl., 1881, p. 88.—Ste-
fánsson, Fl. ísl., ed. 1, 1901, p. 70.—Ibid., ed. 2, 1924, p. 80.—O. & Gr.,
1934, p. 50.
Flora Dan. tab. 1057.
Icelandic: Loðviðir. Danish: Uld-Pil. English: Woolly Willow.
f. trichocarpa (Buser in sched.) Floderus, with scattered, straight hairs on the
capsules, more rarely also on the base of the style. Occurs here and there.
Very common throughout Iceland, in the lowland as in the central highland.
In some parts of Iceland this willow is of very high value, being mown for hay,
and also used for cattle grazing.
Life-form : Ph.
In heaths, in scrub in company with Betula, on open dry ground ; on sandy and
stony soil; in fell-field ; in screes.
Flor. V—VII ; fr. mat. VII—VIII.
Max. height: 1.75 m; average: 0.5—1 m.
Geogr. area : Eur.: Fær.; S.; Norway, Sweden, Finland, Northern Russia ; Novaya
Zemlya.—Asia : Sibcria.
Salix lanata X S. phylicifolia.
Not prcviously recordcd in the Icelandic floristic literature. In H.R. there are
two separate specimcns, which Stefánsson determined as this hybrid. One specimen
is from Möðruvcllir, N. (leg. G.B., 1897), the other from Ásbyrgi, N. (leg. St.St.,
1895). Rccorded from Reykjahlið, N. (S.S., in mscr.).