40 H. MØLHOLM HANSEN 
The Mosathembur Vegetation. Cf. fig. 4, and table 9 A-B. 
On the more prominent parts of Lyngdalsheidi, from which 
the snow is at once swept away by the wind in the winter, we 
find the mosathembur vegetation developed. Even a long distance 
off this type of vegetation is easily recognisable by its yellowish 
hue. This colour is due to Grimmia hypnoides which covers the 
surface in a dense and deep elastic carpet. When the Grimmia heath 
is sufficiently large, the moss carpet is, as it were, split up into 
large tablets separated by systems of lines; the lines of one system 
as a rule converge towards a point in the lower edge of the moss 
carpet, another system forming larger or smaller angles with the 
first one. These lines do not extend into the surrounding mo, there 
we find the usual knoll formation. 
Table 9 A gives the circling results of the phanerogamous flora 
of the mosathembur vegetation. The five first columns represent 
TABLE 9A. 
The Mosathembur Vegetation on Lyngdalsheidi. 
1—5 Localities in Lyngdalur, c. 200 m above sea level, 2/7 1925.06 10: 
Hrölfshölar 280-320 m above sea level, !/r 1925. 11 Thrasaborgir, 
c. 400 m above sea level, ”?/7 1925. (25. !/ıo m?) 
LOVES | 4. 5 6) 70,82 729275109 603 
as] 
a | 
CAREX Tigre A3 G 96 88 84 96 96 48 36 56 44) 24 32 
Salix herbacea......... | A’3 Ch || »/24| 4 4140 100 92 100 100 100 80 
Besturarmubrai....uu 3. E4 H 56 28/44 56 | 56 >| 28| >| >| > 
Thalictrum alpinum ... | A2 H |72120136128148| »| »| 24| 4| 28] » 
Polygonum viviparum.. A3 G 8/20|12| »|28 | 32128! 32| 36| 48 || 8 
Equisetum pratense... | E2 G 4116| »|20| 8) »| >| 28| 8] 4] » 
Armeria vulgaris ...... A3 Ch >| 4| 4| 8| 4) 4| 3| 20| 16| 12) > 
Silene acaulis ......... A3 | Ch |. >| 4| »| »|12| 4) 4] 8| 16) 20) > 
Empetrum nigrum..... E4 Ch >} »| »| »| 8| 8| 8| 8|12| 8| > 
Juncus trifidus ........ | A2 H >} >| »| >| 41 4| 8| »| 8| Al > 
Galium Normanni ..... | aı | H | 8| 4] >| >»[22| >| 2] >| 2] oo 
Cerastium alpinum .. A3 Ch SNA >| >| 12]. | 9 | ee 
Fesfuca<oyina rec Jer ı E4 H 3 13114 EE EE | (442 
Loiseleuria procumbens | A 2 Ch 212 > >| >) >| >) A2 
Luzula spicata......... | A2 H > | >| »| »|12| » | >| >| #10 
Vaccinium uliginosum . | E4 Ch >) al >! 2] >| >| | A 
Equisetum variegatum . A3 H 116 | BES BETEN Be | >| >| "ol 
Rumex acetosa ........ E3 H > | ler > I sl:» |. 1402108 | > 
Agrostis canina........ E 3 H »| >| »| >| 4) »|.> pl ee ||| 
