960 MORTEN P. PORSILD. 
the species marked with an asterisk generally form pure associations. 
The mosses here are the common species of Hypnaceae, especially be- 
longing to the group of Harpidium, Aulacomnium palustre and turgidum, 
Meesea triquetra, Polytricha, etc. Sphagnaceae do not occur here, as 
is ordinarily the case in Greenland on fresh morainic soil. | 
Аз lakes and bigger ponds were not observed, no aquatic 
plants were seen. 
Оп the south coast some moraines are situated on rather im- 
permeable basaltic layers. Their lower-edges are therefore fairly 
well-watered and if in addition they are exposed to the south 
Fig. 10. Well-watered and sunny slope of morainic soil on the south coast. In 
the illustration is seen Erigeron uniflorus, Oxyria, Trisetum, Equisetum arvense, 
Polygonum viviparum, Salix glauca, Pirola grandiflora. On spots like this occur 
also the southern types of the flora (see plant-list). 
and protected by snow during winter, there arises a sort of poor 
Herb-mat. Most of the constituents of this formation are such as. 
those that are to be found in other parts of Greenland (with more 
favourable conditions for plant-life) in dwarf-shrub-heaths or in 
fell-field-vegetations and some of them may also thrive on Hare 
Island in other localities. But on the lower-edges in question they 
become more luxuriant and the whole appearance of the vegetation, 
with the herbs dominating over the shrubs, justifies the name “herb- 
mat” for the vegetation. We find here also the few representatives. 
of the southern types which are at home on that island (see list p. 270). 
