Rit (Vísindafélag Íslendinga) - 01.06.1975, Blaðsíða 78

ference between mounds and hollows, and small shrubs then some-
times occur on the mounds. In the highland areas the surface
becomes ahnost level.
Analyses 1—3 are from Miklavatnsmýri in Flói. There C. nigra
prevails throughout in physiognomy, but E. angustifolium is signifi-
cantly noticeable in covering. The terrain is such that level flarks,
covered with flói vegetation, and mound ridges alternate in ir-
regular pattems, so that regular ridges do not occur. The analyses
are made on these ridges. There is considerable moss on the mounds,
and the motmd pattern is steep. Where the ridges are highest small
shmbs are conspicuous, so that it approximates a shmb mýri. Ana-
lysis 4, from Ingunnarstaðir in Geiradal, was made in a fairly ex-
tensive C. nigra mýri where there was no trace of rims or ridge
formations. There is a slight difference in vegetation between
mounds and hollows. Thus Anthoxanthum odoratum grows exclu-
sively on the mounds. Analysis 5 is from Brjánslækur in Barða-
strönd, taken in a mýri area near the sea. Water floods the mýri
in spring, but in summer the terrain dries significantly. Potentilla
anserina is conspicuous there, but it often occurs in mire tracts near
the sea, especially where sand from the sea has been blown into
the mire tract, although it is not a mire plant. Analysis 6 is from
Egilsáfangi in Kaldidalur (480 metres above sea level). It was
taken in a belt which lies between an Eriophormn flói and a C.
Bigelowii mýri (Tab. XII 19). The position of the sociation is as
follows. In the middle of the area there is an E. angustifolium —
Calamagrostis neglecta flói (Tab. III 20). Along its edges on slight-
ly higher terrain there occurs the sociation now under discussion,
but beyond that is the C. Bigelowii mýri, which then merges into
a moor, cf. sketch p. 97. The physiognomic delimitations, however,
between the sociations are by no means clear.
Analysis 8 is from Grafarlönd vestri in Bárðdælaafréttur where
the terrain is drier than on the other locations and it is obviously
a transitional form towards a Salix heath. The surface is pattemed
with fine mounds and phanerogamous vegetation is sparse.
Analysis 8 is from Vegamót in Snæfellsnes, made there on the
border between a mýri and a flói. In these parts there is an exten-
sive mýri tract running in a westerly direction towards Straum-
fjarðará. The terrain has a slight gradient with altemating mýri
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