455 



rosette il is forced somewhat to one side (Fig. 4), but scarcely 

 to such an extent as in tlie temperate type of P. vulgaris. 

 probably occasioned by the circumstance that the leaves of 

 the autumn-rosette are bent more slightly backward than are 

 those of the spring-rosette. The tension, forcing the rosette- 

 leaves close to the ground — a fact which will be treated later 



Fig. 3. Pinguicula villosa. 



Л. Wiiiler-bud and fruit-stalk; the uppermost foliage-leaf has been removed. (F. H.) 

 J5, Winter-bud and fruit-stalk; the uppermost foliage-leaf is present. (E. W.) C, Trans- 

 verse section of winter-bud. (F. H.) Л — С Vârstien. Kongsvold, Dovre (Norway; July), 

 a\itumn-rosette is not developed. 



on — , can scarcely be very strong in the autumn-rosette of 

 F. nlpina. 



In connection with this distinction between the two types 

 two questions must naturally arise. First, it would be interest- 

 ing to investigate whether the short arctic period of growth 

 has caused the said reduction to be a constant feature in these 

 plants, and secondly we ought to endeavour to draw a limit 

 for the southern extension of the arctic type of f. vulgaris. 



