STUDIES ON THE VEGETATION OF ICELAND 91 
TABLE 214 CONTINUED. 
1 2 3 4 5 6 i 
NZ... A 2 H 4 > 
Era... A 3 H 12 8 > 
=) i ot :._....... E4 G 12 3 12 
Potentilla verna ......... A 2 H 8 4 > 12 
Ranunculus acer ........ E 4 H 8 > 
Rubus saxatilis ........ E3 H N 4 i 
LIL MERE eer E 3 H 8 8 4 > + 
Taraxacum officinale .... E2 H 4 12 8 12 
Trisetum spicatum ...... A3 H 2 16 + 4 16 
Viola palustris.......... E3 H 4 8 8 16 
TABLE 218. Biological Spectra of 21 A. 
1 2 3 4 5 6 7 
0 LT EE 704 772 1072 | 1172 | 1068 1124 1392 
(604) | (672) | (984) | (1148) | (1064) | (1120) 
Number of species ......... 20 26 30 27 26 27 31 
Density of species.......... 6.0 6.7 9.8 11.5 10.6 11.2 13.9 
2 een 29.0 | 212 | 216 | 35.3 | 30.0 31.0 48.0 
Ee eee 71.0 788 784 642 70.0 69.0 52.0 
een ann 13.6 124 | 104 17.4 14.2 15.3 25.3 
2 rr ae eee 10.2 8.3 7.8 113 | 10.1 10.3 147 
mm mm à = 5.1 0.5 34 12 3.6 3.3 8.0 
| ua --- 5165 | 18.1 | 239 | 273 | 307 | 274 | 330 
2 48:9 | 435 | 35.1 | 259 | 228 28.8 9.2 
i 2e 4.5 16.1 15.3 6.1 11.2 9.6 9.8 
= PSN 1.1 1.0 4.1 4.8 3.2 3.2 i 
a EE 
] SN PRES 11.3 5.4 16.3 17.1 17.3 15.4 29.0 
ee 75.5 744 728 69.7 68.0 689 55.2 
Se 13.2 | 202 | 110 | 132 | 147 | 157 | 155 
Dd da PP > ; > ; i 
Ce EPA PEN PIRE 3 - i > 0.3 
mo plants begin to appear. though only here and there. Grasses 
still dominate, thus Deschampsia flexuosa, Anthoxanthum odoratum, 
Agrostis canina, Festuca rubra and ovina, Luzula multiflora, Juncus 
