Коллекция тропических и субтропических лиан в оранжереях Ботанического сада Уральского отделения Российской академии наук

Abstract

Data on the taxonomic composition of tropical and subtropical lianas in the greenhouse collection of the Botanical Garden of the Ural Branch of the Russian Academy of Sciences are presented. Currently, the collection of lianas includes 136 species (65 varieties and hybrids), 48 genera, 29 families. The largest families are Araceae (60 species) and Vitaceae (13 species), the largest generas are Philodendron (43 species) and Passiflora (9 species). More than half of the species are representatives of the flora of South and Central America (54.8 %). The collection includes endemics of western and southwestern Madagascar; New Zealand; Ecuador and South Brazil. The most numerous biomorphological group is the group of leaning lianas – 63 species. We estimated the success of the introduction and the decorative effect of blooms and leaf of the lianas in the collection. Our results showed about 55 % of species can be assigned to the groups of promising and very promising plants for introduction. The other part of the collection (45 % of species) is unpromising. The main reasons for the decrease in the success of the introduction of these species are the absence of blooms and, accordingly, of germinating seeds. Bloom is observed only in 50 species of lianas in the greenhouse collection. About 20 species had the highest estimates of the decorativeness of bloom (8–9 points). High decorative qualities of non-bloom species are provided by leaves of large size, unusual shape, color or surface texture.