Rit (Vísindafélag Íslendinga) - 01.06.1975, Page 122

face is flat, sloping and the soil is rather moist. Analysis 2 is from
Steinnýjarstaðir in Skagaströnd. It is made where conditions close-
ly resemble those of 1, but more mound-pattemed. The sociation
is widely distributed in this area. Analysis 3 is from Strandhöfn
in Vopnafjörður, near a Scirpus pauciflorus sociation (Tab. XIV.
16) on flat, dry ground. Analyses 4-6 are from Holt in Rangár-
vellir where this sociation is widely distributed in relatively dry,
moderately mound-patterned mires. There is some moss in most
places and Sphagnum occurs. E. palustre is most conspicuous in
physiognomy, but barely surpasses C. nigra covering. In analysis
4 Filipendula ulmaria becomes very conspicuous and in 5 Vacci-
nium uliginosum and Menyanthes reach a high frequency, but the
largest mounds occur in this patch. Analysis 7 is from Hofgarðar
in Snæfellsnes, on a hillside located between a lake and an old
gravel bank. The ground is moist there, but mostly flat. I was
under the impression that this was a very rare vegetation type at
Snæfellsnes.
70. E. palustre — Carex Lyngbyei sociation
(Tab.XVxA-B 1-2)
Here only two observations are available, both from Vestur-
Landeyjar, on strips interspersed with C. Lyngbyei flói or flæðimýri,
It would in fact be more correct to refer to this as the border of
flæðimýri, but it lies quite close to the Equisetum mire. For its
description I refer to the passage on flæðimýri (alluvial mire).
This area is to be distinguished from flæðimýri by the fact that it
is never completely flooded and the ground-water level is lower.
Moss is abundant in most of the area. Where the observations
were made this vegetation type was widely distributed, inter-
spersed with the flæðimýri, but covering a much smaller area.
E. palustre is dominant in physiognomy and covering. Where the
mounds are largest the difference in vegetation between mounds
and hollows becomes so pronounced that this sociation occurs ex-
clusively on the mounds, but in the hollows there occurs an almost
pure C. Lyngbyei sociation. The species are numerous. The E per-
centage is high. Ch is inconspicuous and the HH percentage is
high. Considerable Theropytues occurs, in analysis 1.
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