The Flora of Disko Island and Adjacent Coast of West Greenland. 27 
All the mentioned localities are in the lowland. 
Mostly abundantly fruiting. 
Hibernates covered by thick layers of snow. 
tL 12. Equisetum silvaticum L. 
A decided southern type, from 65° and southwards rather com- 
mon. N. of this latitude it is recorded from Aulatsivikfjord 68°0' (Bg.); 
an islet in the Sydostbugt (Bg.); Imilik at the icefjord of Jakobshayn 
69°10’ (Sor.) and Disko at Godhayn (Walker). In all these places it 
has been repeatedly sought in vain for by us, and it has never been found, 
neither by the above mentioned collectors nor by us, at the heads of the 
big fjords at Holsteinborg and north of it. The northmost specimens 
in H. H. are from South Isortog (65°20’) and vicinity of Godthaab. 
| 13. Equisetum arvense L. 
In bogs, swamps, and heath; often inundated a great part of the 
summer when growing on lakeshores. Also as undergrowth in rich herb- 
mats and thickets. Often it forms extensive growths along the shores 
of rivulets and lakes or in thickets. 
Very common throughout the whole area. 
Wide-spread species, probably without northern limit in Green- 
land. Ascends undoubtedly to the snowline. Abundantly fruiting ex- 
cept in the most humid places. 
Covered by snow and often by ice in winter. 
Varies very much in luxuriant places; in the southern part of the 
land, especially in herb-mats and thickets, forms occur with spikes 
on the branching green shoots. 
IV. Lycopodiaceae. 
I 14. Lycopodium Selago L. 
In swampy heath and bogs, in herb-mats and willow-thickets 
especially on organogenous soil, not on petrogenous. Very common 
throughout the whole range. Wide-spread species, probably without 
northern limit on the coast of Greenland. Ascends the hills as far as 
the preceding vegetation has deposited sufficient mould, and is thus 
not among the pioneers of plants. 
Varies according to the quality of the habitat; most common is 
f. appressa Desy. the very branchy, yellow-green form with densely 
appressed leaves. Hardly ever fruiting, but forming bulblets in abundance 
with great power of migration and germination. In vigorous heath, herb- 
mats and copses less ramified forms occur with distant leaves, in appea- 
rance and size quite similar to the main-species from the temperate 
