56 Morten Р. PorsiLp. 
Disko it Just occurs in the area of the northern types, being rarer on 
the southland. 
At the northmost known locality of the species: Laksefjord 72°30’ 
it was too common for settling this place as the northern limit. 
Therefore I am inclined to consider it a northern type in 
Greenland, belonging to that contingent of West-American arctic spec- 
ies migrated to Greenland over Smith-Sound. (Cf. Simmons: Phyto- 
geography р. 135 $44. and Map. I). | 
On favourable expositions, 1. e. rather warm sandy-gravelly tracts, 
where it does supplant either other Gramineae or other vegetation it 
is able to become so abundant as to characterize the vegetation, thus 
in the inmost of the Kügänguaq-valley on the northside of Disko; but 
it never forms dense carpets as other species of the genus. 
In the sandstone-domain of Waygat it ascends to considerable 
heights. 
Abundantly flowering and fruiting. 
Undoubtedly often snowless. The living parts of the shoots are pro- 
tected by the withered remains of the leave sheaths. 
A 35. Calamogrostis hyperborea LANGE, Ropinson & FERNALD. 
In vigorous, sandy and moist localities in herb-mats and thickets. 
Disko: The south coast 69°15’ very rare near Udkiggen at Godhavn (Nygaard!); 
Østerdalen near the hot springs (Th. P.!). 
Mainland: Päkitsoq 69°28’ (V.); Tasiussarssuag 68°20’ (Во.); Sofiehavn 
68°20’ (Bl.); N. Stromfjord: several places (Korn.; Holst; Th. Fr.) Ipiutarssuaq 
67°44’ very common (P. & E.); vicinity of Holsteinsborg: Sarfanguaq 66°58’ (E.P.); 
Maligiag 66°58’ (P. & E.); Naujarssuit in Qegertalik 66°44’ (P. & E.). 
A decided southern type, the northmost localities is Umanaq 
(Rink teste Lange) 70°40’. South of the area found in several localities. 
S. of 64° the localities are lying rather closely together, but it is pro- 
bably nowhere common. 
Often forming large dense carpets. 
All the above mentioned localities are in the lowland. 
Abundantly flowering and fruiting. 
Covered by thick layers of snow during winter. | 
A 36. Calamogrostis neglecta (Енвн.) FL. DER WETT. 
On moist sand, especially on lake-shores and along water-courses. 
Disko: The southland from Mudderbugt to Diskofjord included, rather 
common (Р.); Laksebugt 69°40’; the valley of Iterdlagssuaq 69°45’ (P.) in Mel- 
lemfjord; in valleys in the northwest-land at 70°11’ (P.); Hare © (P.). 
