449 



dying away at Ihe hinder end, bearing the rosette leaves, and 

 furnislied with a few roots, an inch in length and somewhat 

 constricted in their upper part. At first they are white and 

 bear root-hairs, later on these decay, and the root is covered 

 with a brown laver of cork. The size of the rosette-leaves 



Fig. 1. 



.1. deedling of P. valyaris from the Færoes; this plant has been 

 taken out from a colony of seedlings. B, Cotyledon of the same. 

 r, Seedling of P. alpina from Tromse. {E.W.; 1886) D, Different 

 forms of glandular hairs from the cotyledon of P. vulgaris- (F. H.) 



varies somewhat, but on an average seems to be a little smaller 

 than that of those in our Danish specimens. With regard to the 

 shoot-structure and the manner of growth some peculiarities are 

 found in the arctic specimens of Finguicida, which are not 

 found in plants from more southern places. Therefore. I must 

 mention the case a little more in detail. 



The shoot-structure of F. vulgaris has been described very 

 fully bv BccHENAC!. later on Warming investigated the shoot- 



