Article

For the period 1994-2004, despite financial constraints related to the economic and political changes in Bulgaria, some 400 papers dealing with the taxonomy, biosystematics and floristics of the vascular plants of the Bulgarian flora have been published. Taxonomic revisions of different groups, such as Achillea, Cardamine, Centaurea, Crepis, Erysimum, Plantago and Veronica, were based on modern biosystematic and allozyme or DNA supported analyses. Many of these studies have been carried out in cooperation with researchers and research teams from other countries, such as Austria, Denmark, Italy, Poland, Slovakia, Sweden, United Kingdom etc. Currently the Bulgarian flora consists of ca. 3900 species, 910 genera and 150 families. In the last decade many species new to science have been described and numerous taxa have been confirmed for the Bulgarian flora or recorded for the first time, e.g. 10 genera (Acalypha, Ambrosia, Commelina, Cytinus, Duchesnea, Echinocystis, Myricaria, Rochelia, Sicyos, Sisyrinchium) and two families (Commelinaceae, Rafflesiaceae). During the report period the 10th volume of Flora of Republic of Bulgaria has been published, including the taxonomic treatments of 10 families. Many taxa from Pteridophyta, Asteraceae, Brassicaceae, Campanulaceae, Poaceae etc. have been studied karyologically-