Individual development of <i>Clematisintegrifolia</i> L. introduced to the Botanical garden-institute, Ufa scientific centre, RAS
The article presents the characteristics of the biological features of C. integrifolia L. in nature and under introduction conditions to the Botanical Garden of Ufa. The natural habitat of C. integrifolia covers Central, Eastern and Western Europe, Asia Minor, the southeast of Western and the southwest of Eastern Siberia. This species represents herbaceous perennial 0.6-0.9 m high (up to 1.2 m in culture). In the collection of the Botanical Garden this species has been grown since 1972 from seeds supplied by the Botanical Garden of Novosibirsk. Over long-term observations (between 2006 and 2014) it has been noted that this type of seasonal plants passes through all stages of its development, including the early vegetation season, flowering, fruiting and the late vegetation season. The vegetation period in the Botanical Garden of Ufa lasts, on the average, for 164 days. The article discusses the results of the 7-year observations on the initial stages of ontogenesis of Clematis integrifolia L. The morphological characteristics and weight of 1000 seeds are given. The latent period, the state of the seedling, the juvenile, immature, virginal stages are described as well as young generative plants. Observations were made on 30 model plants. The seeds were stratified prior to sowing in a refrigerator at +3-5°C for 5 months. The seedling state continues for 26-30 days, and the juvenile stage continues for 118-122 days. The plants complete the first year of their lifecycle at the juvenile stage. The second year begins with the immature stage that lasts for two or three years. Between the ages of three and four years the plants enter the virginal stage. The generative period begins between the ages of five and seven years. Morphological parameters of plant stems, leaves and roots are given for all age conditions. Each ontogenetic stage described in the text is specially illustrated.