Rit (Vísindafélag Íslendinga) - 01.06.1975, Page 60

in this country except for that district, but despite its high fre-
quency it is not much noticeable in covering, but rather in physiog-
nomy. E. angustifolium is here in slightly less abundance than C.
rostrata, and it is conspicuous how much is present there of Betula
nana and Equisetum palustre. It is possible that this sociation is
fairly widely distributed in these parts. Sphagnum occurs there to
some degree.
28. C. rostrata — Eriophorum angustifolium sociation
(Tab. VI A-B 8 and Tab. VI x A-B 2)
Two observations are available here, the first one is from Ána-
staðir in Vatnsnes, where the sociation is not uncommon, since an
Eriophorum flói and C. rostrata flói are adjacent to each other. The
analysis is made in proximity to analysis no. VI 1, where these
sociations are closely intertwined, but in between them are patches
with an E. angustifolium —- C. rariflora sociation. Tab. II. 4. These
three analyses were taken from parallel sites and they illustrate an
extensive area of the range at Vatnsnes. The E. angustifolium —
C. rariflora sociation appears to lie at the lowest level of the flói
and at the same time at its wettest point. In other respects this en-
tire flói, where the three above mentioned analyses were made,
is very wet, flat and level, so that in effect it has the characteristic
topography of a pure Eriophorum flói. The sociation is poor in spe-
cies with few accompanying species and none which attracts atten-
tion.
29. C. rostrata — Scripus cæspitosus sociation
(Tab. VI x A-B 4 and Tab. VI x A-B 11-13)
The observations of this sociation are all made in coastal districts,
VI. 4, from Strandhöfn in Vopnafjörður, VI x 11-12 from Snæfells-
nes and 13 from Krýsuvík. This is in accord with the fact that
Scirpus cæspitosus is not to be found except where oceanic winds
prevail. The two character species are dominant both in phy-
siognomy and covering, but other species are not much in evi-
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