344 THE CANADIAN NATURALIST. [June 



Corallorhiza innata (Europe, Asia, Am.). Carex lagopina (Europe, Asia, Am.). 



Luzula spadicea (Europe, Asia, Am.). Gmelina (America only). 



spicata (Europe, Asia, Am.). cryptocarpa (Europe, Asia, Am.). 



pilosa (Europe, Asia, Am.). stricta (Europe, America). 



J uncus balticus (Europe, Asia, Am.). Hierochloe borealis (Europe. Asia, Am.). 



These, it will be seen, are for the most part north temperate 

 plants, common in many parts of the globe, and which are only 

 excluded from Eastern Arctic America by the greater rigour of 

 its climate. 



The best marked European and Asiatic species that are not 

 found further east in Temperate or Arctic America are the 

 following : — 



Anemone narcissiflora. Spirasa chamaedrifolia. Atriplex littoralis. 



Ranunculus Pallasii. Pyrethrum bipinnatum. Pinus cembra. 



Aconitum Napellus. Gentiana prostrata. Carex Norvegica. 



Parrya macrocarpa. Eritrichium aretioides. Deyeuxia strigosa. 



Dianthus alpinus. Pedicularis verticillata. Langsdorffii. 



Cerastium vulgatum. Primula nivalis. Colpodium fulvum. 



Hence it appears that of the 364 species found in Arctic West 

 America, 319 inhabit East America (arctic or temperate, or both), 

 and 320 are natives of the Old World — a difference hardly sufficient 

 to establish a closer affinity of this flora with one continent rather 

 than with the other. 



The species peculiar to this tract of land are : — 



Braya pilosa. Artemisia androsacea. Salix glacialis. 



Saxifraga Richardsoni. Saussurea subsinuata. 



The rarity of monocotyledons, and especially of the glumaceous 

 orders, is almost as marked a feature of this as of the Asiatic 

 flora : of the 138 arctic species of Glumaceae only 54 are natives 

 of West Arctic America. 



The materials for this flora are principally the plants of Chamisso, 

 collected during Kotzebue's voyage, and described by himself and 

 Schlechtendahl ; Lay and Collie's collections, described in Beechey's 

 voyage; the 'Flora Boreali- Americana ;' and Seemann's plants^ 

 described in the ' Botany of the Herald.' Most of the above 

 collections are from Behring's Straits. For the arctic coast flora 

 I am mainly indebted to Richardson's researches, and to Pullen's 

 and other collections enumerated by Seemann in his account of the 

 flora of Western Eskimo Land. For the southern extension of 

 the flora I have had recourse to the 'Flora Boreali-Americana;' 

 Ledebour's ' Flora Bossica,' which includes the Sitcha plants ; the 

 American floras of Nuttall, Pursh, Torrey, Gray, etc. ; and to the 



