186 



Fr. J. Mathiesen. 



The rhizome quickly dies away from behind. A transverse 

 section discloses the vascular bundles ("steles", v. Tieghem), 

 circular to oblong-arched, surrounded by an endodermis, and 

 resembling those of Pr. egaliksensis already described. Thick- 

 walled and finely pitted sclereids appear both as groups in the 

 medulla and isolated in the steles. The surrounding parenchyma 



Fig. 11. Primula stricta. 



a, the epidermis of the lower surface of the leaf, b, the epidermis of the upper surface. 



c, transverse section of the leaf, (a, b, and c, obj. 4, oc. 4). (Alten Fjord, Norway.) 



has its adjacent cells arranged in radial rows, radiating from 

 the vascular bundle; the cells are pitted and were found 

 empty of starch (June, July). 



The peduncle has the same structure as that of Pr. 

 egaliksensis. 



The Leaf (fig. 11). The lateral epidermal walls of the 

 upper surface may be nearly straight or slightly undulating, 

 while those of the lower surface are more strongly undulated. 



