The Flora of Disko Island and Adjacent Coast of West Greenland. 83 
Normally the flower is pure white. On limecharged soil it becomes 
: 4 5 
lilac, almost as the European form. 
Hibernates covered by snow and often by ice. 
A 163. Arabis alpina L. (Incl. A. glabra A. Bl. RowLer 
& WIEGAND). 
From the herb-mats, copses, springs, water-courses and moss-bogs 
of the lowland ascending to the fell-field and moist edges of moraines. 
Very common throughout the whole area. 
A southern type; the known north limit now lying at about 
72°30’. Nevertheless in South Greenland more frequent in the coast 
region than in the fertile part of the interior. 
Abundantly flowering and fruiting. 
Hibernates covered by snow. 
A 164. Arabis Holboelli Horn. (Turritis retrofracta (HooK.). 
On sunny, not too dry slopes. 
Disko: The south coast near Godhavyn 69°15’ from several places (several 
collectors, for instance, Hotpo.it); Mellemfjord 69°42’ (Th. Fr.). 
Mainland: Tasiussarssuaq (Bg.; Bl.); Christianshaab (Soer.); Jakobshavn 
(Holboll); Sarqaq about 70° (V.). Common in the region of Holsteinsborg; espe- 
cially in the Fjords. 
South of the area rather common till 64°, but south of this latitude 
only a single specimen is known from about 61° (Ros.). 
In spite of this it must be stated as a decided southern type 
according to its occurrence in America. 
Abundantly flowering and fruiting. 
Certainly always covered by snow during winter. 
! 165. Arabis Hookeri Lance (Turritis mollis Hook.). 
In favourably situated and rather moist places. Rare and local. 
Disko: Without locality recorded by Varxu; not re-found. 
Mainland: Eqe 69°42’ near the glacier (P.); N. Stromfjord: Amitsuarssuk 
(KKorn.?); Sanerut (Korn.); N. Isortog (V.); the fjords inland from Holsteinshorg: 
numerous places (several collectors). 
A northern type; south of the area only observed in a few places, 
the southmost at about 64°. North of the area extraordinary many 
localities in the southmost part of Nordost-Bugt. Besides known from 
the district of Cape York. 
Abundantly flowering and fruiting 
