academy of sciences.] GEOGRAPHICAL DISTRIBUTION. 15 



Clarke, who examined my specimens and furnished me with notes on the synonymy. According 

 to this author Carex nova Bail is identical with this species (in litt. Mar. 27, 1902). 



Anemone narcissiflora I have enumerated as occurring in the polar regions, but it is only 

 in the northeastern corner of Asia that it extends so far north and only as the var. monantha 

 D C. Farther south the species shows an enormous geographical distribution throughout the 

 Northern Hemisphere in the mountains: The Alps of Switzerland, the Pyrenees, Jura, Caucasus, 

 Cappadocia, Ural, Altai, Davuria, Kamtschatka, St. Lawrence, Unalaska, Alaska, and Colorado, 

 where it occurs with several well-marked forms. 



Gentiana frigida genuina is only known from two stations within the Arctic region, viz, 

 St. Lawrence Bay and Arakamtschetschene Island (Siberia). It is also a native of the 

 Carpathian Mountains. 



Concerning Pedicularis Groenlandica, it is very doubtful whether this species was ever 

 collected in Greenland, although it has been reported from Labrador and Hudson Bay. In 

 the Rocky Mountains it extends as far south as to the borders of New Mexico. Calamagrostis 

 purpurascens is rare in Greenland and is known only, so far, from Fort Yukon and Bernard 

 Harbor in Arctic America. 



Finally may be mentioned that some few of these species are also Alpine in the Atlantic 

 States, viz, Silene acaulis, Alsine verna, Sibbaldia procumbens, Khodiola rosea, Artemisia borealis, 

 Veronica alpina, Polygonum viviparum, Oxyria digyna, Betula glandulosa, Luzula spicata, Carex 

 rigida, C. capillaris, Trisetum subspicatum, Phleum alpinum, Poa alpina, and Agropyrum 

 violaceum. 



10G023"— 23 2 



