66 



growing in wet sandy places, mostly in downs in NW. -Europe. 

 This form is not so extrem as P. grandiflora and there is 

 evidently a continuous series of forms from the typical P. 

 rotundifolia of Sphagnum -bogs, through the var. arenaria of 

 wet sandy places, to the arctic grandiflora. 



The specimens collected were in full flower. It has been 

 recorded by Kane and Haye from Smith-Sound (Nathorst, 1. c. 

 p. 17, has some doubt as to the correctness of this statement), 

 further by the Peary Auxiliary Expedition of 1894 from Cape 

 York and from Inglefieid-Gulf («f. rotundifolia, var. pumila 

 Hook.»), but not earlier from Wolstenholme-Souud. 



Cassiope tetragona (L.i Don. 



Saæifraga oppositifoUa L. 



S. flagellaris Willd. f. setosa (Pursh) Engler. 



Found by Kane in three places between 78° 18' Lat. N. and 

 78° 37' Lat. N., not earlier recorded from Wolstenholme Sound. 



S. tricuspidata Rottb. 



S. nivalis L. 



S. cernua L. 



S. cæspitosa L. 



A low form with 1-flowered stalks corresponds with <S. 

 groenlandica L., a taller form is more like <S. decipiens Ehrh. 



Saliæ arctica Pallas, f. groenlandica Anders. 



The specimens collected are in ripe fruit; they correspond 

 with the more broad-leaved forms of S. groenlandica (Anders.) 

 Lundst., but do not reach the typical 6'. arctica ; cfr. Nathorst 

 1. c. p. 48. 



Potentilla Vahliana Lehm. 



P. emarginata Pursh {P. fragiformis, f. parvißora Trautv. ; 

 P. nana Willd.). 



P. aff". (nivea vel) ruhricaulis. 



Nathorst (I.e. p. 23) mentions that the Potentilla nivea from 

 Cape York differs from the typical P. nivea in the often two- 

 paired root-leaves, the two lowest leaflets being very small, but 



