New data on distribution of 85 microspecies of the genus Taraxacum of sections: Borea, Celtica, Erythrosperma, Hamata, Macrodonta, Palustria and Ruderalia in Poland are given in the paper.
Species of genus Taraxacum (Asteraceae) in Poland. Part 1. Pomorze, Mazowsze and Podlasie regions. Fragmenta Floristica et Geobotanica Polonica 7: 5–62. Kraków. PL ISSN 1640–629X. ABSTRACT: 118 species of the genus Taraxacum of sections: Celtica, Hamata, Erytrosperma and Ruderalia are recorded from the Pomorze, Mazowsze and Podlasie regions (Poland). The following 13 species are new to Poland: section Celtica – Taraxacum bracteatum Dahlst. and T. nordstedtii Dahlst.; section Erytrosperma – T. dissimile Dahlst.; section Ruderalia – Taraxacum acre H. Øllg., T. edmondsonianum H. Øllg., T. exsertiforme Hagend., Soest & Zevenb., T. inops H. Øllg., T. latens H. Øllg., T. pulverulentum H. Øllg., T. subserratifrons Saarsoo, T. subxanthostigma M. P. Christ. ex H. Øllg., T. unguifrons Hagend., Soest & Zevenb. and T. wiinstedtii H. Øllg.
Data on occurrence of 22 Taraxacum species new to the Polish flora of sect.: Borea, Erythrosperma, Hamata, Palustria and Ruderalia and 2 new taxa of Taraxacum of sect. Ruderalia: T. glowackii H. Øllg ined. and T. podlachiacum H. Øllg ined. are given in the paper.