On a sample of U. glabra 100 regrowth individuals of the same age and equal vitality, a comparative study of properties of the shoot and two-year-old shoot systems (BSS) was carried out. On this material, the type of BSS almost completely corresponded to the position of the maternal shoot in the crown. For comparison, two-factor analysis (two-way ANOVA) was applied three times with habitat type (3 gradations) and BSS type (2 gradations) as predictors. As a response, the following signs were selected: length of the maternal shoot, length of the first lateral shoot from above of the maternal one, and ratio of the length of maximum lateral shoot to the length of the maternal one. In the first case, the response characterized the shoot itself, while the two next responses were the characteristics of BSS. In all cases, the analysis showed a significant dependence of the response on the type of BSS. However, the link with the habitat turned out to be significant only for the first response. Thus, it was revealed that the essential metric characteristics of a BSS of a certain type, in contrast to the shoot, do not depend on its habitat. This reveals the program properties of BSS as the main space-time architectural unit of the crown. This point of view is confirmed by comparing the angles of branch side shoots. It corresponds to the idea of the integrity of the living system according to A.A. Lyubishchev: the unity of the whole with the freedom of parts.