Arctic Plants: Geographical Distribution 77 b 



**Equisetum scirpoides * Koenigia islandica 



" tenellum *Arenaria dliata 



*Poa pratensis *Alsine Rossid 



* " alpina * " biflora 

 " stricta **Sagina nivalis 



*Glyceria angustata **Ranunculus glacialis 



* " Vahliana **Draba arctica 

 ** " Kjellmanni * " oblongata 



Catabrosa concinna " altaica 



* " algida *Cochleariafenestrata 

 *Aira caespitosa *Arabis alpina 



** " alpina *Cardamine bettidifolia 



**Calamagrostis stricta Potentilla fragiformis 



*Carex ur^ina ** " maculata 



* 

 ** 



lagopina " multifida 



glareosa *Saxifraga stellaris forma comosa 



parallela *Cassiope hypnoides 



* " nardina **Gentiana tenella 

 Salix polaris **Taraxacum officinale 



*Betula nana * " phymatocarpum 



However, of these 40 species, 22 are recorded by Simmons from the arctic 

 American archipelago (I.e.), and I have marked these with an asterisk in the 

 list, given above. In other words, of the 124 species known from Spitzbergen, 

 106 occur also on the arctic coasts of this continent. And if we extend the com- 

 parison to the coasts of Greenland, 11 species may be added (marked with twc 

 asterisks) which the northern region from the east coast of Greenland to Point 

 Barrow has in common with Spitzbergen. The species which thus inhabit 

 Spitzbergen, but which are absent from this part of arctic America, including 

 Greenland, are as follows: 



Equisetum tenellum Salix polaris 



Poa stricta Draba altaica 



Catabrosa concinna Potentilla fragiformis 



" multifida 



Equisetum tenellum (Liljebl.) Krok was first described by Liljeblad,' who 

 referred it to E. hiemale as a variety, but with the remark that it might represent 

 a distinct species; it was found in Torne Lapmark, and the mountains of 

 Jamtland. Blytt (Norges Flora I.e. p. 6) refers it to E. scirpoides Michx.; the 

 variety tenellum of E. palustre described by Elias Fries ^ is, of course, a different 

 , plant. 



Poa stricta Lindeb. is known also from some mountains in Sweden and 

 Norway, but with the exception of its occurrence in Nova Zembla, no stations 

 in Russia or in Siberia are recorded by Trautvetter.' 



Catabrosa concinna Th. Fr. has also been found in Nova Zembla, Waigatsch, 

 and some few stations in western arctic Siberia: Jalmal and Dickson's harbour. 



Salix polaris Wahlenb., on the other hand, is widely distributed from Dovre, 

 Finmark, Lapmark, through arctic Russia and Siberia. From this continent, 

 but outside the region visited by the expedition, Salix polaris has been reported 

 from Port Clarence and from St. Lawrence island by Kjellman.* 



Draba altaica is a native of the Altai mountains, but it has furthermore 

 been reported from arctic Siberia (Dickson's harbour), and from Nova Zembla. 



Potentilla fragiformis Willd. has been collected on Nova Zembla, in arctic 



1 Utkast til en Svensk Flora. 2nd. Edit. TJpsala, 1793, p. 384. 



2 Flora Scanica. Upsalaj 1835, p. 155. 



' Inoiementa Fl. Phaenog. Rossioae (I.e.). 



* Fanerogamer fr&n Vest-EskimSernaa land (Vega Exped. Vetensk. laktt. Vol. 2. Stockholm, 1883.) 

 Fanerogamfloran pS St. Lawrence 6n. (ibidem. Vol. 2. Stockholm, 1883.) 



