Rit (Vísindafélag Íslendinga) - 01.06.1939, Blaðsíða 20

20
C. THE BLÓMLENDI FORMATION.
Obs. 1—3 were made on the slope from Hásteinn west
to Kaplagjóta at h. ca. 50 m, above sea level, on July lOth
1933. H. 20 cm, Area 1—10 m2. (Table 7 A and B).
As mentioned on p. 7 this formation lies on steep slopes
in the sun where the soil is in many places gravelly and
loose, very dependent on the atmosphere for heat and
moisture from day to day, but yet covered with a con-
tinuous carpet of moss. The characteristic plants of the
formation are Plantago lanceolata L. and Succisa pratensis
Moench and these two plants grow nowhere else in the is-
lands and elsewhere in the country are only found in the
south, in ”Rangárvallasýsla” and ”V-Skaftafellssýsla”,
where the conditions of growth are similar and the sunny
position. Other characteristic plants are Galium verum L.,
Achillea millefolium L., Thymus serpyllum L. var prostrata
Hornem., Festuca rubra L., Anthoxanthum odoratum L.,
Agrostis canina L., and Erigeron borealis (Vierh.) Simm.
The vegetation is very luxuriant. The no. of species is 54.
The biological spectrum shows a very low A % 17,8 with
a low Ch % only 11,0. The high E 1 % figure 24,2 is also
noticeable. Here the E 1 % reaches its highest in the West-
mann Islands and this can best be explained by the sunny
position and the shelter which the slopes afford to the
vegetation.
D. THE ANGELICA CLUSTERS, THE PUFFIN
COLONY, THE DRY MEADOW, AND THE CULTI-
VATED MEADOW LAND.
Obs. 1, on angelica clusters was made on ”Hvannhilla”
in ”Bjarnarey” on July 8th, 1933, h. above sea-level, ca.
10 m, H 1 m, F 1—10 m2. Obs. 2—3, on puffin colony, were
made (2) on Bjarnarey on July 6th, 1933, h. above sea-
level ca. 150 m, (3) on ”Litli Höfði”, Heimaey, on July