86 H. G. SIMMONS. [sec. arct. exp. fbam 



many gradations exist. The figures give some of the more typical 

 forms in both species as well as in D. nivalis and Z). Mrta. The 

 margin cilias and other unbranched hairs are, of course, alike in the 

 different species, but in D. fladnizensis there are perhaps more inter- 

 mediate forms between all the three types in the hair-covering than 

 in the others. 



In my collection might be distinguished the different forms of the 

 present species, which Lindblom (Kann. Skand. Drabae) has established, 

 I have not, however, thought it necessary to separate them. 



"^/^ ^1=.^ 



Fig. 2. Typical hairforms from the leaves of Draba fladnizensis. 



D. fladnizensis was rather common in the region visited, but not 

 quite so much so as D. alpina. It preferred somewhat wet soil, espe- 

 cially mossy depressions, that were flooded from time to time. The 

 flowers were generally found from the middle of July, and soon after 

 the fruit appeared. 



Occurrence. North coast and Grinnell Land; this species is not 

 mentioned by Hart, but I have seen specimens among the collections 

 from the Nares expedition, referred to D. rupestris. Even if I can 

 give no special localities, I think it may be assumed to be rather com- 

 mon in the northern parts. Hayes Sound region, rather common. 

 Specimens from: Twin Glacier Valley (890), Skraling Island (1372), 

 Cape Viele (888), Cape Rutherford (1157, 1159, 4194), Fram Harbour 

 (1128, 1163, 4188, 4189), Cocked Hat Island (1271), Bedford Pim Island 

 (444, 1193, 4185). South coast, still more common, especially to the 

 west. Specimens from: Fram Fjord (1643), Harbour Fjord (2170, 2225, 

 2461, 2524, 2581, 4206, 4214), Goose Fjord (2995, 3307, 3488, 3576). 

 West coast: only noted from Reindeer Cove and Lands End, but prob- 

 ably common. 



Distribution: East Greenland, Northern West Greenland, 

 Arctic American Archipelago, Arctic America, Canada, Rocky Mountains 

 to Colorado, Alaska, Arctic Siberia, Baical Mountains, Altai, Himalayas, 

 Arctic Russia, Novaja Semija, Spitsbergen, Franz Joseph Land, Northern 

 Scandinavia, Alps and Pyrenees. 



