1868.] 



HOOKER — ARCTIC FLORA. 



339 



Old World, or of this and of Greenland ; not being found in any 

 part of North America ; 24 are confined to Arctic Europe and 



(it 



and. 



The following Arctic European plants are of sporadic occur- 

 rence in North America : — 



Ranunculus acris, (Rocky Mountains). 



Arabis alpina, (Greenland and Labrador). 



Lychnis alpina, (Greenland and Labra- 

 dor). 



Arenaria arctica, (Greenland and Rocky 

 Mountains). 



vema, (Greenland, Arctic Islands, 



and Rocky Mountains). 



Alchemiila vulgaris, (Greenland and Labra- 

 dor). 



Gnaphalium sylvaticum, (Greenland and 

 Labrador). 



supinum, (Greenland, Labrador, and 



White Mountains). 



Vaccinium myrtillus, (Rocky Mountains 

 and shores of great lakes). 



Cassiopeia hypnoides, (Greenland, U. States 

 Mountains, Canada, and Labrador). 



Phyllodoce taxifolia, (Greenland, New Eng- 

 land Mountains, and Labrador). 



Gentiana nivalis, (Greenland and Labrador). 



Veronica alpina, (Greenland and White 

 Mountains). 



Bartsia alpina, (Greenland and Labrador). 



Pedicularis palustris, (Lab'r& Newfoundl'd). 



Primula farinosa, ( Labrador, Canada, Maine 

 and shores of the Great Lakes). 



Salix phylicifolia. (U. States Mountains). 



herbacea, (Greenland, Labrador, and 



White Mountains, etc.). 



Juncus trifidus, (do. do.). 



Carex capitata, (Greenland and White 



Mountains). 

 Phleum alpinum, (Greenland, White 

 Mountains, Canada, and Labrador). 



Calamagrostis lanceolata, (Labrador). 



There are besides a considerable number of Arctic European 

 plants, which, in the New World, are confined to Greenland, being 

 nowhere found in East America : these will be enumerated when 

 treating of the Greenland flora. 



The plants which are widely distributed in Temperate America 

 or Asia, but almost exclusively Arctic in Europe, are the following — 



Ranunculus Pallasii, (Asia and America). 



Trollius Asiaticus, (Asia). 



Parrya macrocarpa, (Asia and America). 



arctica. (Asia and America). 



Stellaria longipes, (Asia and America). 



Potentilla emarginata, (America). 



Epilobium latifolium, (Asia and America). 



Sedum quadrifidum, (Asia). 



Saxifraga bronchialis, (Asia and America). 



Senecio resedasfolius, (Asia and America). 



Ligularia Sibirica, (Asia). 



Mulgedium Sibiricum, (Asia) 



Cassiopeia tetragona. (Asia and America). 



Gentiana detonsa, (Asia and America). 



Pleurogyne rotata, (Asia and America). 



Eritrichium aretioides, ( Asia and America). 

 Gymnandra Pallasii, (Asia). 

 Castilleja pallida, (Asia and America). 

 Veronica macrostemon. (Asia). 

 Pedicularis flammea, (America). 

 Pinguicula villosa, (Asia and America). 

 Koenigia Islandica, (Asia and America). 

 Salix>polaris, (Asia and America). 

 Picea orientalis, (Asia). 

 Larix Ledebourii, (Asia). 

 Platanthera hyperborea, (America). 



obtusata, (America). 



Deyeuxia deschampsioides, (Asia and N. W. 



America). 

 Dupontia Fisheri, (America). 



The works upon which I have mainly depended for the habitats 

 of the Arctic European plants are Wahlenberg's ' Flora Lapponica ' 

 Ledebour's ' Flora Rossica,' Fries's ' Summa Vegetabilium Scandi- 

 naviae,' and ' Mantissas,' and various admirable treatises by 



