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By Richard W. Spjut

ISBN-10: 089327383X

ISBN-13: 9780893273835

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Another interesting early study compared of 119 samples of seeds from foresters’ seed collections in Poland (TYSZKIEWICZ 1934b) and demonstrated large differences between northeastern and southern seed sources. 2. 3. The role of Norway spruce in the forests of Poland (after BORATYŃSKI 1998) Participation of the area covered with the Norway spruce stands in the forest area of Polish State Forests (after ŻYBURA’S data) Most studies of geographic variation confirm differences between northeastern and southwestern, mountain population groups, yet the differences are not always significant (Table 1).

2. Embryonic shoot of the winter bud in median longitudinal section; Feulgen reaction with fast green. Tannin cells in the pith are stained yellow or green. Arrows indicate the nodal diaphragm (crown). (photo A. HEJNOWICZ) A – male embryonic shoot; mi – microsporophyll; B – vegetative embryonic shoot; n – needle June or early July, needle primordia are formed in the vegetative bud. This process terminates in early September. As early as June, the two types of embryonic shoot can be distinguished.

P. abies is important in the Scandinavian countries, in Germany, and in Russia (Table 2). In Germany, Norway spruce grows in the mountain ranges of the southern part of the country (HAEUPLER and SCHÖNFELDER 1989) and is planted as a forest tree in many other regions. The species occurs frequently in the mountain ranges of the Balkan Peninsula, extending to northern Albania and Macedonia. Further to the south, it grows in isolated stands dispersed in western Macedonia, western Bulgaria, and northern Greece (ADAMOVIĆ 1909; HAYEK 1931; STOJANOV 1963; FUKAREK 1981; BORATYŃSKI et al.

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A Systematic Treatment of Fruit Types by Richard W. Spjut

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