32 Morten P. Porsirp. 
X. Gramineae. 
I 28. Hierochloé alpina (Litsesr.) R. & S. 
On mouldy and peaty soil, on rocky flats and especially in dry heath, 
raver in thickets and herb-mats. 
Stands manuring very well, but does not occur in aggregate patches. 
Very common throughout the whole area. 
Wide-spread arctic plant with neither northern nor southern limit. 
Ascends the hills to the snow-line, but only in old vegetation, not 
belonging itself to the pioneers of the new moraines. 
Abundantly flowering and fruiting. 
Probably often snowless during winter. The live buds densely 
covered by the withered leaf-sheaths. 
A 29. Phleum alpinum L. 
In vigorous herb-mats and thickets. 
Disko: South-coast at Godhayn 69°15’ numerous localities (P. and others); 
inside the Blesedalen about 69°20’ (Nygaard); Diskofjord (69°30’ (P.) rare. All 
the localities in neighbourhood of hot springs. 
Mainland: N. Isortoq 67°10’ (Ros.); Prestefjeld at Holsteinborg 66°55’ 
(P. & E.). Thereafter at 65° and 64° and common south of 64° (Ros.). 
A decided southern type, the above mentioned localities being 
the north limit in Westgreenland. 
All the mentioned localities are in the lowland, but in the south- 
most part of Greenland it is observed to a height of 500 m (Ros.). Flow- 
ers yearly, but only as an exception does it fruit in the most favourable 
localities. The grains are however not spread, remaining in the spike 
under the snow, but through experiments I have ascertained their 
growing power (E. P.). 
Hibernates abundantly covered by snow. 
Vv 30. Alopecurus alpinus Sm. 
The natural habitats of the plant are moss-bogs and moist spots 
in the heath; but owing to its great predilection for organical manure 
and great power of dispersal it appears at all the present and former 
settlements, tent places, underneath fowling cliffs, on fowling islets and 
near fox’s dens in friable soil. In these manured places the plant beco- 
mes much more vigorous than in the bogs and forms extensive patches 
that characterize the settlements more than any other plant. When 
the supply of manure is stopped, an abatement in its luxuriant growth 
sets in; hence we can, to a certain extent, draw a conclusion, as to the 
age of the old settlements, from the rate of its development. 
