40 H. G. SIMMONS. [SEC. ARCT. EXP. FRAM 
nell Land. Bartsia alpina is found in America only in Labrador, but 
it is rather a common plant in Southern Greenland. It must doubtless 
have come to N. W. Greenland from the south, and is to be placed in 
Group S. Betula nana is distributed in West Greenland from 63° 
northwards, and, in the east coast, from the Angmagsalik district north- 
wards to 731/,°. To the south it is replaced by B. glandulosa, but it 
appears again in N. E. America, not, however, in the arctic parts. It 
must also go to Group S, species spread in Danish Greenland, where 
they are probably immigrants from Labrador and wandering northwards 
from there. How it has reached Eastern Greenland is another question; 
it may have come from Iceland, or its area may once have been conti- 
nuous in the south. Glyceria tenella has so discontinuous a distri- 
bution that it can only be placed in Group D. 
Taraxacum arctogenum, in Group II, 4, is an endemic Greenland 
species (Gr. G). Montia lamprosperma belongs to Group S, it is spread 
to the south in Danish Greenland but seems to be lacking in Arctic 
America. It may have reached Greenland from the east, as it is com- 
mon in Iceland and the Faeroes: or from Labrador, where it seems to. 
grow, if the indications of Brirron & Browy, Ill, Fl., I, p. 4, about 
“Montia fontana’” are to be trusted and thus interpreted. 
Group III, 1, contains 4 species of which one, Carex membrano- 
pacta, is entirely american; two, Chrysosplenium alternifoliwm and 
Alsine Rossii, are lacking in Greenland but reach from Asia as far 
west as Spitsbergen or (the former) still further in the south. The fourth, 
Draba subcapitata, is somewhat doubtful, but its distribution in Elles- 
mereland and further to the south-west, shows that it is an american 
species within the western parts of our special area at least. It is not 
yet known with certainty from Greenland, but has a circumpolar distri- 
bution reaching, on the Atlantic side, to Jan Mayen. These 4 species 
are to be placed in Group A. Here belong also the species of Group 
II, 2, which have reached N. W. Greenland. Taraxacum hyparcticum 
and Ranunculus Sabinei are entirely american, Pedicularis capitata 
and P. arctica are spread from Eastern Siberia throughout Arctic Ame- 
rica. Hesperis Pallasii reaches as far west as Novaja Semlja. They 
have doubtless come to Greenland over Smith Sound, as is also the 
case wilh Potentilla Vahliana from Group II, 3. Pedicularis lanata 
also seems to be an american immigrant in Western Greenland, where 
it is common in the northern colonial districts. It is, however, a cir- 
cumpolar plant, and appears also in a small area in S. E. Greenland. 
