Rit (Vísindafélag Íslendinga) - 01.08.1930, Síða 12

12
H Erigeron borealis . Ai H Gentiana campestris E3
H Festuca rubra . Er Th aurea Ai
Ch Cerastium alpinum . Aj G Habenaria albida Er
Ch cæspitosum . . . . Es H Hierarcium sp E2
H Cardamine pratensis .... . E4 H juncus trifidus A2
H Deschampsia cæspitosa.. . E'2 G balticus Ai
H fiexuosa .. . . Es H Rumex acetosa e3
Ch Dryas octopetala . A3 Ch Salix lanata Ai
H Luzula multiflora . Ei Ch — herbacea A3
H Parnassia palustris . E2 Ch Selaginella selaginoides .. Ai
H Poa glauca . A3 Ch Silene acaulis A3
G — pratensis . Er H Taraxacum vulgare E2
G Polygonum viviparum . . . . A3 H Thalictrum alpinum A2
H Ranunculus acer . E2 Ch Thymus serpyllum Er
H Festuca ovina . Er H Tofieldia palustris A2
H Galium boreale . E2 H Trifolium repens E2
H verum . Ei H Trisetum spicatum A3
H Normanni . Ei
This heather-land is a bit different from the usual. Here
are no knolls, but smooth slopes, and the plant-vegetation
shows that it is undoubtedly heather-land, or more exactly
the group of it called Elyna-mo. Here and there in this
heather-land are flowery hollows, where the snow lies deep
in winter, and correspond 4o the type of vegetation called
»geiri« by H. M. H. These are not included in the plant list.
Here the proportions belween the life-forms are greatly
different from those of the Grimmia heath. H are entirely
dominant here, and G has increased a little, the Ch percentage
is still pretty high. This agrees weli with the results of Dr.
H. M. H. on Lyngdalsheiði, where he has circled in a similar
altitude as my flora-list is taken from (200 metres).
If the result, according to the flora-list (table III), is com-
pared with the forest-land vegetation (table II) it may by seen
that the H vegetation keeps to the forest-land and enjoys
the protection of the forest. On the other hand, the Ch vege-
tation thrives much better in the woodless tracts than in the
copsewood. The forest also protects the Southern plants. As
soon as it terminates the Northern plants grow much more
numerous, even if they don’t predominate in the heather-
land. In other words: the copsewood, small as it is, shelters