FOREST TREE SEED AND SEED COLLECTING 



93 



From experiments conducted at Mariabrunn, Austria, Cieslar l 

 has shown the importance of climatic varieties of forest trees in 

 the practice of silviculture (Fig. 17). The later experiments of 

 Zederbauer 2 at the same place indicate not only that seed collected 

 from suppressed or subdominant trees produces plants less resist- 

 ant to disease than seed collected from dominant trees, but also 



FIG. 17. A plantation of Norway spruce 17 years old grown from Austrian 

 seed. The large trees at the left were grown from seed collected at 2500 

 feet above sea level; the smaller trees at the right were grown from seed 

 collected between 4000 and 5000 feet above sea level. Near Mariabrunn, 

 Austria. 



that the individual characteristics of the mother tree, such as 

 unusual divergence from the typical form of the species, may be 

 transmitted through the seed. 



From experiments conducted at Eberswalde, Prussia, Dengler 3 

 has recorded marked variations in the rate of growth in Scotch 



1 Cieslar, A.: Die Bedeutung klimatischer Varietaten unserer Holzarten 

 fur den Waldbau. (Centralblatt f. d. gesamte Forstwesen, S. 1-19. 1907.) 



2 Zederbauer, E.: Versuche tiber individuelle Auslese bei Waldbaumen. 

 (Centralblatt f. d. gesamte Forstwesen, S. 201-212. 1912.) 



3 Dengler, L.: Das Machstum von Kiefern aus einheimischem u. nordi- 

 schem Saatgut in der Oberforsterei Eberswalde. (Zeitschrift f. Forst- u. 

 Jagdwesen, S. 137-152. 1908.) 



