210 OLAF GALLØE 
Type Ib. 
(Dry heaths with drifting soil; devoid of lichens). 
Ex. 1. Heath on mountains between Fnjoskådalur and 
Eyjafjérdur (North Iceland). 
DENAS EL EP UE A ee F %o 100 Salix Janata. ies see F °/o 20 
Glumitlore: ... £26 204.0% F °/o 100 Vaccinium uliginosum .. F °/o 20 
Dwarf birch.......... F °/o 50 Lichens ss nr Fo 0 
Empetrum.. . . er... F °/o 40 
Type Ic. 
(Dry heaths on level (not knolly) ground; heaths poor in phanerogams, 
but rich in lichens). 
Ex. 1. Heath near Einarstadir (North Iceland). 
Dryas LE seers net F °/o 100 Dwarf. birch sees F °/o 16 
Glumifloræ. 1.11. F °/o 100 Silene acaulis ........ F % 10 
Empelrum 2.126. F °/o 90 L.ichens. : ee F °/o 100 
Ex. 2. Heath near Myvatn (North Iceland). 
Dryas ARENA ME Le wx. F °/o 100 Drwarlibirch:.- © 20 F1/0°270 
Émpelrum,. ec se F °/o 100 Vaccinium uliginosum . F °/o 50 
Glamiflore.. 2. 2..,5.2 F °/o 100 Lichens... ots sae F °/o 100 
Type Il. 
(Dry, knolly heaths with phanerogams on the horizontal surfaces of the knolls, 
lichens on the sides of the knolls, mosses, etc., in the depressions between the knolls). 
Ex. 1. The vegetation of the knolls on the heaths 
near the Laxä (North Iceland). 
Empelrum Senseo F °/o 100 Dwarf birch em F °/o 80 
Grasses. Vee 61k ITR F °/o 100 Lichens.... . sane F °/o 100 
Ex.2. The vegetation of the knolls on the heaths 
near the Laxa, near Skjalfandi. 
ÉLIRE E MARS eps F 9/0 100 Dryas, ss sr He Se F °/o 40 
Émpetrunmiis titi. F °/o 100 Dwart willow .. 2.202 F %/o 20 
Grasses tse PAT een F °/o 100 Gyperacex ..:.3.0 eee F °/o 20 
Arctostophylos........ F °/o 80 Alchemilla alpina ...... F °/o 20 
Dwanf.birehi 2... F % 80 Masses. 7025). HEN NR F °/o 60 
Vaccinium uliginosum.. F °/o 80 Lichens.%1:24 70420 F °/o 80 
Ex. 3. The vegetation of the knolls on Reykjaheidi 
(North Iceland). 
Biwarf Birch. 205: F °/o 100 Salix lanata... (a small amount) 
Vaccinium uliginosum . F °/o 100 Gallunar ston er (a small amount) 
Frupetrum. fen is eee F °/o 100 Mosses is 2720 re LCR F °/o 40 
Jones S/E BESES F °/o 60 Tichensi stra.) secant F °/o 40 
Caisses ie: Let à F °/ 60 
