virke i samme Retning, dels modvirke hverandre; Forsøgene viser 

 jo nemlig, at der med Hensyn til Løvspringstid ikke blot gives 

 tidlige og normale Bøge, men en hel Række, der er forskellige med 

 Hensyn til Løvspringstid, fra meget tidlige til meget sildige, og at 

 Afkommets Løvspringstid i Hovedsagen er parallel hermed, men dog 

 med Afvigelser. 



Her er imidlertid Hovedsagen denne, at Forsøgene viser, at 

 der indenfor Fagus silvatica gives smaa Artér, Isoreagenter, 

 der er forskellige med Hensyn til Løvspringstid. 



On Leaftime in the descendants from Beeches 

 with different Leaftimes. 



(Abstract). 



By 



C. Raunkiær. 



In order to determine to what degree leaftime is constant in 

 different individuals, a number of beeches that were early in leaf, 

 in the year 1902, were marked. To be able, as far as possible, to 

 eliminate the influence of the soil and the age of the individual, there 

 were chosen amongst those trees that were early in leaf, trees of 

 different ages, and so that a marked tree with early leaftime, stood 

 with, and under the same conditions as, trees with normal leaftime, 

 and were of the same age as those. In the two following years, 

 the marked trees were in leaf before the control trees with which 

 they were being compared. 



To test the behaviour of the descendants with regard to leaftime, 

 I marked the following five trees in the Spring af 1914, and noted 

 the dates on which they were in leaf, for comparison with the average 

 time for beeches. 



Beech Nr. 876 very late leaftime 



— 877 late — 



— 878 late — 



— 879 early — 



— 880 very early — 



In 1915 these trees preserved essentially the same relations 

 to each other. Fruits were collected separately from each, and 



Botanisk Tidsskrift. 36. Bd. 14 



