46 H. G. SIMMONS. [sec. argt. exp. fram 



Var. canescens n. var., is characterised by a dense tonientose 

 covering also of the upper surface of the leaves, which even in the old 

 leaves is almost as grayish-white in colour, as the nether one. It forms 

 a parallel to the varieties argentea, Blytt, and hirsuta, Hartz, of D. 

 odopetala. 



D. integrifolia is one of the three most common plants in Elles- 

 mereland, and is absent from very few places where there is any higher 

 vegetation at all. It also makes only small demands on the nature of 

 the soil, and even if it is most abundant and vigorous in the archaean 

 districts, it can also grow on localities so poor as plains of limestone 

 debris, if only the water supply is not too scarce. Swampy ground 

 it cannot bear, and consequently it is limited to the top of bigger 

 knolls, where it grows out into the bogs. It is one of the first species 

 to come into flower (about the middle of June or even earlier), and fruits 

 abundantly. 



Occurrence. Northern coast: Cape Joseph Henry and Floeberg 

 Beach, Hart{!). Grinnell Land: Discovery Harbour, Hart(!), Greely; 

 further as it seems at every station visited by the Nares expedition. 

 Very common in Hayes Sound and the neighbourhood of Fram Harbour 

 (specimens 649, 1081, 1411, 264, 1250). South coast, common (specimens: 

 1619, 2168, 2345, 3590, 3951, 4218). Western coast, only seen at Lands 

 End, between Eidsfjord and Baumann Fjord, Coal Bay, and brought 

 home by Bay from Bay Fjord (480), but doubt less common also here. 



The var. canescens in dry places among the type: Hayes Sound: 

 Skraling Island in Alexandra Fjord (1376); western valley in Fram Fjord 

 (1884), above the anchorage in Harbour Fjord (2572). 



Distribution: North-eastern Greenland, rare, in company with 

 Z>. odopetala, West Greenland from Lockwood Island, 83° 24' down to 

 the south, Arctic American Archepelago, Arctic America, Labrador, New 

 Foundland, Anticosti, White Mountains of New Hampshire(?), Rocky 

 Mountains down to 52 °, Alaska, St. Lawrence Island, Land of the Chuk- 

 ches. D. odopetala on the other hand, is spread in the mountains of 

 Europe, in Arctic Russia, Novaja Semlja and Spitsbergen ; in Asia, in 

 the arctic parts as well as in the alpine region of the mountains, every- 

 where alone. In the Bering Sea region, in Alaska and the Rocky 

 Mountains, but probably not in Arctic and Eastern America, it meets 

 D. integrifolia, as is also the case in North East Greenland, where it 

 again seems to have reached by way of Scotland, Faeroes, and Iceland, 

 where it is still found in the higher mountains. Thus, D. odopetala 

 has a still wider range where no D. integrifolia is found. 



