Description: Plectocephalus americanus (as Centaurea aloha) from Stow, MA, USA. Date: 31 October 2006, 06:32. Source: Flickr [1]. Author: Dwight Sipler [2]Uploaded by uleli.
Summary[edit] Description: Plectocephalus americanus (Centaurea americana) from the side, Lubbock, TX. Date: 14 June 2006. Source: Own work. Author: user:pschemp.