ARKIV FÖR BOTANIK. 



BAND 12. X:o 14. 



A statistical description of Trieiitalis europjea. 



By 



C. V. L. CHARLIBR. 



Read February 12th 1913. 



The following little investigation was performed by the 

 writer principally for affording me some simple numerical 

 illustrations to the elementary lectures on biological statis- 

 tics, which I, at the request of the mathematical Faculty, 

 held at the universit}^ of Lund in the autumn 1912. It claims 

 not to solve any biological problems, but only to give some 

 instances of the mode of treatment of simple biologic- 

 statistical problems. 



The specimens of Trientalis europcea, on which the follow- 

 ing investigation is based, were gathered in the parish of 

 Vittsjö (in northern Skåne) between the 8th and the 23 

 of June, 1912. It may be remarked that it was rather diffi- 

 cult in the last days of this period to obtain complete samples 

 (with pollen), the anthers having then already begun to 

 shrink. Only such specimens were, however, examined, which 

 seemed to be unobjectionable regarding the character con- 

 sidered. 



The flowers were gathered by my children in the wood 

 at the shore of the little lake Vittsjön. Observing a manifest 



Arkiv för botanik. Bana ]2. X.o Ii. ' 1 , 



