i92 Fr. J. Mathiesen. 



med tydligt iirskiljbara delar, — och innerst sjelfa blom- 

 ställningen, hvars hufvudaxel har en märkbar längd och 

 hvars blomknopper äro füllt tydliga, ungefär 2,5 mm långa, 

 och med alla blommans delar ganska langt utbildade . . .". 

 In this Primula, the main bud also developes foliage leaves 

 during the same summer, in which it is formed. 



Flowers of type A (fig. 12) were found as frequently as 

 of type B. The stigma in type A is level with the base of 

 the anthers and self-pollination may thus readily be effected. 

 Fig. 12, В shows a short-styled flower but corresponding 

 long-styled form, which might be expected to be present, 

 did not occur in the material examined by me. The stigma- 

 papillae of A were slightly larger on the average, than those 

 of B. The corolla is dark purple in colour. 



Anatomy, The adventitious roots vary in thickness 

 and in number of rays, and roots with 4, 5 and 6-rays were 

 found. The endodermis is rather prominent, and Casparian 

 spots are very distinct (fig. 13, Л). The cells of the primary 

 cortex were devoid of reserve-materials (July), and their 

 walls showed collenchyma-like thickening. The epidermis 

 is thin-walled and perishes quickly. The outermost layer 

 of the primary cortex is developed as an exodermis, with 

 the cells filled with a dark-brown substance. 



The peduncle (fig. 13, B) differs from that of the spe- 

 cies previously described by the absence of a sclerenchymatic 

 ring during flowering. It appears, however, from a peduncle 

 of the previous period of growth that the cells between, 

 and just outside, the vascular bundles are somewhat thick- 

 ened during the ripening of the fruits. Chlorophyll granules 

 are present in the cells of the exceedingly lacunar cortex. 

 The vessels in the strands are few and narrow (fig. 13, B), 

 whereas the leptome is rather strongly developed. The paren- 

 chyma is thin-walled. 



