472 



arranirement it jiains a possibility of reaching above tbe Sph((g- 

 num in tlie following year. Tliat tbe pbenomenon is not, 

 as I at first supposed, caused bv tbe influence of climatic 

 factors on tiie plant, will be evident by the fact that it lias 

 only been observed in a very few specimens in all tbe collec- 

 tions from different places in Scandinavia, and to draw a 

 geograpliical line between tbe two types, as I have tried to 

 do from the mentioned supposition, and as I have done with 

 F. vulgaris, is quite impossible here. 



These specimens I can only regard as those which are 

 unfitted for the struggle for existence, and this agrees very 

 well with the fact that they are found mingled with the others, 

 both in arctic and temperate regions. 



Diagram of the manner ofgrowtli of P. villosa. 

 Flower Flower 



Winter-bud 



Spring-rosette 



Elongated internodes 



I. P. villosa. normal 

 manner of growth. 



Winter-bud 

 Elongated internodes 



Elongated internodes 



II. P. villosa^ constantly over- 

 grown by the Sphagnum. 



The leaves are very concave, often the edges are bent so 

 closely together that the leaf is formed like a channel (Fig. 9, A). 

 — As to vegetative propagation, I have, in spite of the rich 

 material at my disposal, only observed it a very few times; 

 from the lower parts of the rhizome, probably from the spring- 

 rosette of the preceding year, a few shoots with elongated 

 internodes had developed. But, as a whole, vegetative propa- 

 gation is very scanty. Concerning the number of flowers, \ 



