Biogeographical map showing the different temperate grassland ecoregions of the Great Plains and Tallgrass prairies regions of the United States. Data from a display at Brigham Young University's Bean museum.
<a href="https://de.wikipedia.org/wiki/User:Chumwa" class="extiw" title="de:User:Chumwa">Maximilian Dörrbecker</a> (<a href="https://de.wikipedia.org/wiki/User:Chumwa" class="extiw" title="de:User:Chumwa">Chumwa</a>)
CC BY-SA 2.5
<p><span class="int-own-work" lang="en">Own work</span>, using
</p>
<ul><li><a href="//commons.wikimedia.org/wiki/File:US_Great_Plains_Map.svg" title="File:US Great Plains Map.svg">this map</a> by <a href="//commons.wikimedia.org/wiki/User:Ninjatacoshell" title="User:Ninjatacoshell">Ninjatacoshell</a></li>
<li><a href="//commons.wikimedia.org/wiki/File:Der_Westen_der_Vereinigten_Staaten.jpg" title="File:Der Westen der Vereinigten Staaten.jpg">this map</a> by <a href="https://de.wikipedia.org/wiki/User:Captain_Blood" class="extiw" title="de:User:Captain Blood">Captain Blood</a></li></ul>