The Flora of Disko Island and Adjacent Coast of West Greenland. 47 
grains in the spikes during the whole of winter. But an intense and pa- 
tient search will always result in the finding of seedlings. 
Normally only the spikes protrude above the snow. 
XI. Cyperaceae. 
| 62. Eriophorum polystachion L. (Е. angustifolium Вотн.). 
In moist moss-bogs and marshes along the shores of lakes and 
brackish lagoons, often in great quantities. 
Very common throughout the whole area, but certainly not as 
widely distributed as the following species. 
Very common in Greenland without southern or northern limit, 
ascends to. considerable altitudes just as far as the bogs and pools are 
thawed up every day for at least a couple of months. even when they 
are covered with ice during the night. 
Е. ferrugineum! Bristles reddish, nearly as in FE. russeolum Fr., 
upwards paler. 
At Qamavik on the southern side of the Nordfjord I saw a great 
growth of Г. ferrugineum, all the plants of which having rust-coloured 
bristles. The other species were growing Just in the neighbourhood 
and partly mingled with it, but kept the normal colour of the bristles; 
I did not observe any intermediate forms. 
Abundantly flowering and fruiting. 
Hibernates covered by snow. 
| 63. Eriophorum Scheuchzeri Hoppe. 
In localities similar to those of the preceding species, still more 
common. 
Note: The upper sheaths often somewhat swollen and perhaps this is the 
reason why such specimens in dried condition have been determined as EF. vaginatum 
L., which species does not occur in Greenland. 
It seems to be a pathological phenomenon due to the effect of the night-frost 
in the springtime. Phenomenons similar to this have been observed on various 
species of the Gramineae (comp. Ев. BucHENAau: 2. Deutsche Nordpolfahrt, II, 1, 
Botanik p. 53, who attributes this to another cause). 
Abundantly flowering and fruiting. 
Hibernates covered by snow. 
A 64. Heleocharis acicularis (L.) В. Br. f. submersa Hs. Nitss. 
Forming carpets at the borders of small, shallow, not quite dried- 
up lakes and ponds. 
