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structure of the arctic species and found that it agreed with 

 BccHENAü's description. The result of my investigations, how- 

 ever, does not show this. According to Bcchenac the shoot- 

 structure is the following: The plant, on reaching the light, 

 develops its first rosette, the so-called "spring-rosette" which 

 terminates in a flower: thus the main axis ends its growth. 

 But at the time of flowering a rejuvenating shoot is seen in 

 the axil of the uppermost foliage-leaf; this shoot develops into 

 the second rosette "the autumn-rosette." While developing, it 

 forces the fruit- stalk somewhat to one side, and often before 

 the fruit is ripe, the stalk is flaccid and almost rotten. Simul- 

 taneously, the spring- rosette and its roots usually decay, and 

 the autumn-rosette is now nourished exclusively by its adven- 

 titious roots. Towards the winter the leaves of the autumn- 

 rosette decay entirely, and in the middle of the latter is now 

 found the fully developed hibernacle which next year develops 

 nto a new spring-rosette. In the case of the plant not flowering, 

 both spring and autumn rosettes belong to the same axis. ^ 



The description given here suits the shoot-structure of 

 the "temperate" specimens of F. vulgaris^ and in my material 

 I have found the same to be the case in two specimens from 

 Norway and the Færoes. That the same early decay of the 

 fruit-stalk is found also in these plants I conclude from a 

 peculiarity concerning the germination. I have received seedlings 

 from Romsdalen (Norway) and the Færoes (Fig. \, A), and 



Whether Büchenai is right in regarding the shoot-structure in Fin- 

 guicula vulgaris as sympodial 1 cannot decide at the present time. Pro- 

 fessor С Raunkiær has directed my attention towards the fact, that 

 Irmisch regards the said shoot-structure as monopodia!. This point 

 naturally being of great interest I intend to investigate it more closely 

 in the future, but in ecological respect and as regards my observations 

 on temperate and arctic types of P. vulgaris the question has not any 

 real importance, as will also be evident from the following repre- 

 sentation. Whether the shoot-structure of P. vulgaris is sympodial or 

 monopodial, the distinction between temperate and arctic types in the 

 genus Pinguicula must be made nevertheless. 



