ABSTRACT: The genetic variation in 20 provenances of European larch, growing under site conditions of the Beskid
Sądecki mountain range (experimental area in Krynica), was investigated during a long-term study carried out within
the 1967 Polish Provenance Experiment on Larch. Data consisted of diameter measurements taken outside bark on
standing trees of the analyzed provenances. Results showed that there was no distinct variation in the tested larch
populations in respect of stem form. Some differences between compared provenances in respect of stem taper and
form factor were the result of differences in tree height and diameter.