Abstract The Lentibulariaceae family comprises three genera: Pinguicula, Genlisea, and Utricularia. This family consists of around 250 species of carnivorous plants, each featuring unique trap structures, found in a wide range of habitats around the world, such as moist soils, aquatic environments, epiphytic substrates or extreme conditions like snowy mountains or hard rock surfaces near fast-flowing streams. A rich diversity of Utricularia, including 21 species and one subspecies, has been documented in Vietnam since 1999. To fully understand their anatomy, further investigation is required. The subjects of this study are nine Utricularia species collected in Lam Dong Province(U. bifida L., U. caerulea L., U. gibba L., U. scandens Benj., U. striatula Sm., U. pierrei Pellegr., U. uliginosa Vahl, U. aurea Lour., U. punctata Wall. ex A.DC.) The anatomical adaptations of Utricularia exhibit typical characteristics of aquatic species: Intercellular spaces containing air (aerenchyma) enhance ventilation and gas exchange; lignified pericycle forms a ring of sclerenchyma and concentric vascular bundles in the flower stalk provides structural support. These observations can serve as a scientific basis for assessing the natural regeneration and recovery potential of Utricularia species, giving guidance for conservation efforts and the development of biological resources in the study area.
Hoa et al. (Fri,) studied this question.