382 



anil Ulf dense growth ol' llio plant may also be nsetiil in this 



respect. 



Il is nol unconuiion lo line! planls 



with (lead stems from the preceding 

 year upon lliem (Fig. 28, A), which 

 proves tlial at least these specimens 

 live longer than one year (compare 

 the statement y: (O'O in Necman, 

 "Sverriges flora," Lund, 1901). 



The rosette-leaves, and also 

 the lowermost stem-leaf, are stalked, 

 somewhat reniform in shape, and 

 deeply tripartite with either entire 

 or shallowly 2 — 3 lobed elliptical 

 segments. The 1 — 2 upper leaves 

 are sessile and tripartite with oblong 

 lobes. The leaves are glabrous or 

 also slightly hairy at the margin. 



The stem is ascending: before 

 and just after flowering it is short, 

 in dwarf specimens from Advent 

 Bay in Spitzbergen about 0'5cm.; 

 afterwards it elongates greatly and becomes as much as 16 cm. 



Fig. 29. R. pygmœus. 



A, Longitudinal section through a 

 principal bud (Danmarks ; Aug. 1891 ; 

 ^/i). C, Carpel; M, stamen; p, nec- 

 tary-leaf; sp. perigoneleaf ; lb, scale- 

 leaf; sh, stem-leaf. B, Stamen (-Vi) 

 and carpel C^/i) from the same bud. 



B va=^ C 



Fig. 30. E. pygmœus. 



A, Nectary-leaf (^/i). B, Nectary («/i)- C, Fruit (Danmarks 0; Aug. 1891; 'Vi)- I), Flower 

 of R. pygmæus (Holstensborg in Greenland; D, drawn by E. W. ; V2). 



high. The peduncle differs from the stem in being more 

 densely hairy and more deeply furrowed. 



