Polymorphism of nuclear DNA in selected species of sect. .

This paper presents the results of research on nuclear DNA polymorphism in six apomictic species of marsh dandelions sect. The studies demonstrated the existence of clear genetic differences between species and the existence of nuclear DNA polymorphism within each of the studied species.

Achene micromorphology and its taxonomic significance in some species in sect. (Asteraceae).

The genus is one of the largest and taxonomically most complicated apomictic genera. Currently, it is considered to consist of over 2800 species placed within 60 sections. Due to the large number of species, and their uniform morphological design and plasticity of leaves, the identification of plants at the species level is challenging even for specialists.

Rediscovery of (Cyperaceae) on the northeast periphery of its range in Europe.

In recent years, three large populations of were found in Poland, the richest occurrence of this species in over 30 years. The goal of this research is to determine the habitat factors lead to the mass occurrence of and the present situation of that species and its habitat in Central Europe. Soil conditions of the three populations were studied.