Description: Verbena hastata. Source: USGS photo [1]. Author: Matthew Perry. This image contains digital watermarking or credits in the image itself. The usage of visible watermarks is discouraged. If a non-watermarked version of the image is available, please upload it under the same file name and then remove this template. Ensure that removed information is present in the image description page and replace this template with {{Metadata from image}} or {{Attribution metadata from licensed image}}. Caution: Before removing a watermark from a copyrighted image, please read the WMF's analysis of the legal ramifications of doing so, as well as Commons' proposed policy regarding watermarks. If the old version is still useful, for example if removing the watermark damages the image significantly, upload the new version under a different title so that both can be used. After uploading the non-watermarked version, replace this template with {{Superseded|new filename|version without watermarks}}.
Description: English: Verbena hastata L. - Blue vervain, Swamp verbena, Simpler's-joy - United States, IA, Scott Co., Davenport, Nahant Marsh. 2002. Date: 2002. Source: http://plants.usda.gov/java/largeImage?imageID=veha2_002_avp.tif. Author: Jennifer Anderson, hosted by the USDA-NRCS PLANTS Database.
Description: English: Blue Vervain (Verbena hastata) blooming in Schenley Park, Pittsburgh. Date: 14 August 2013, 13:47:23. Source: Own work. Author: Cbaile19.
Description: English: Verbena hastata L. - Blue vervain, Swamp verbena, Simpler's-joy. Date: 29 August 2014, 19:29:27. Source: http://plants.usda.gov/java/largeImage?imageID=veha2_003_ahp.tif. Author: Robert H. Mohlenbrock. USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln. Courtesy of USDA NRCS Wetland Science Institute.
