The Botany of Iceland - 01.12.1942, Blaðsíða 141

THE PTERIDOPHYTA AND SPERMATOPHYTA OF ICELAND
139
spikelets, and usually larger than in the main form, and with longer stolons. On
sandy soil.1
Very common in all parts, in the lowland as well as the central highland. Much
valued for hay and grazing.
Life-form : H.
On dry soil and sandy shores, in uncultivated and cultivated grass-fields, meadows;
in nearly all kinds of communities.
Flor. VI—VIII; fr. mat. VIII—IX.
Max. height: 72 cm; average: 25 cm.
Geogr. area: N. Am. : Newfoundland, southward to Virginia, Alaska, southward to
California and Colorado.—Greenl.: W. 60°—73°. E. 60°4'—75°18'.—Eur. : Fær.;
E.S.I.; throughout Eur., from Spitsbergen to the Mediterranean. Novaya Zemlya.
Caucasus.—Asia: From the north coast southward to Asia Minor, Pamir. Kamchatka,
Korea, Honshu.—N. Africa.
Glyceria arctica Hooker, /3. laxa Lange.
Bennet, 1886, p. 71.
Recorded by Bennet, loc. cit., from Mývatn. It is most likely Puccinellia retro-
flexa subsp. borealis.
Glyceria Borreri Bab.
Rostrup, 1887, p. 185.
Recorded by Rostrup, loc. cit., as found at Hvammsfjörður, W., and at Hrappsey,
W., may evidently also stand for Puccinellia retroflexa subsp. borealis, see this.
67. Glyceria fluitans R.Br., Prodr.
I (1810) p. 179.
Festuca fluitans, K. & M., 1770, p.
204.—Poa fluitans (Scop.), Baring-
Gould, 1863, p. 437.—G. fluitans
R.Br., Babington, 1871, p. 344.—
Gronlund, Isl. Fl., 1881, p. 129.—
Stefánsson, Fl. Isl., ed. 1, 1901,
p. 56.—Ibid., ed. 2, 1924, p. 64,—
O. & Gr., 1934, p. 25.
Flora Dan. tab. 2403.
Icelandic : Flóðapuntur. Danish : Manna-
Sodgræs. English : Flote-grass.
parts (see fig. 44), where it is
the country between Hvitá and
Only found in the southern and southwestern
very abundant in some places, for instance in
Þjórsá, lower part.
A valuable fodder grass.
In two localities (Kiðaskarð and Brekkukot near Vatnsfjall in the Skagafjörður
valley) there have been found viviparous specimens of Festuca rubra. These specimens,
co lected by Th. Sorensen in July 1930, were vigorous, up to 30 cm high, with
practically all spikelets transformed into bulbils.