Description: English: Beach sunflower (Helianthus debilis) and southern fleabane (Erigeron Quercifolius) in bloom along the edge of the Concho Billy Trail, in Big Cypress National Preserve. Date: 19 April 2000. Source: http://gallery.usgs.gov/images/01_14_2009/n63Umy8LKf/large/DHA0012.JPG. Author: U.S. Geological Survey.