Rosebay Willowherb or Fireweed
This was a special type of pioneer species from recent history. It grew in urban areas where air raids and ground combat had created expanses of rubble and debris. The term "Trümmerblumen" [debris flowers], which was coined as a reference to unusual plants or plants previously unknown to urban spaces, was used quite often when referring to the Rosebay Willowherb. (Illustration: Prof. Dr. Otto Wilhelm Thomé: «Flora von Deutschland, Österreich und der Schweiz», 1885, Gera, Germany. Source: biolib.de, Kurt Stueber, GFDL)
