Anatomical features of leaves of the Busch lily (Lilium buschianum G. Lodd.) in Western Siberia forest zone

The Busch lily (Lilium buschianum G.Lodd.) is the least studied of the four species of lilies that grow in Siberia. In the Russian Federation, L. buschianum is listed in the Red Books of the Transbaikal Territory, Amur Region, Jewish Autonomous Region, and Khabarovsk Territory. The aim of this study was to investigate the anatomical features of L. buschianum leaf blades and compare them with those of other species in the genus growing in Siberia. The information obtained is necessary for developing effective introduction and reintroduction strategies aimed at preserving biodiversity and restoring species populations. The study revealed that the L. buschianum is characterized by the following anatomical features of the leaf blade: the cell walls of the epidermis are straight or wavy, dorsiventral leaves and stomata in the lower epidermis, the anomocytic stomatal apparatus, high density of cells in both the upper and lower epidermis, as well as stomata in the lower epidermis, large stomata (on average 78.3 µm long and 53.7 µm wide). The conducted study classifies L. buschianum as a heliophyte and mesophyte, but the plants also have a number of features that can be considered as an adaptation mechanism to arid environments. L. buschianum is a species with a fairly wide range of tolerance in relation to substrate moisture, which allows it to grow both in habitats with a well-balanced moisture supply and in conditions of moisture deficiency. The species is recommended for cultivation in stony gardens and open areas with good drainage.