title: Typha laxmannii Lepech. the new, expansive kenophyte in Poland: Distribution and taxonomy
abstract: The paper provides data on a new antropophyte species - &lt;em&gt;Typha laxmannii&lt;/em&gt; Lepech. which spreads throughout Poland as a hemiagriophyte. Its present distribution in Poland is given on a cartogramme map in a 10×10 km square grid and its geographic element, population numbers and notes on habitats are provided. An identification key to 5 species of the &lt;em&gt;Typha&lt;/em&gt; genus, two native, one new which is the topic of this paper, and two which can be expected to be discov
journal: Acta Societatis Botanicorum Poloniae