field image of Silphium terebinthinaceum PRAIRIE DOCK at the James Woodworth Prairie Preserve - a thick stand of basal leaves, indicating many individual specimen, at full open; these leaves at about 18 inches (46 cm) tall by 9-12 inches (23-30 cm) wide are unique and distinct.
Summary[edit] Description: Polski: Rożnik przerośnięty (Silphium perfoliatum), Ogród Botaniczny PAN w Warszawie. Date: 2 October 2017, 12:26:31. Source: Own work. Author: Salicyna.
Summary[edit] Description: field image of Silphium terebinthinaceum PRAIRIE DOCK at the James Woodworth Prairie Preserve - a thick stand at full bloom; average height of flowering heads is about 7-8 feet (213-244 cm). Date: 11 August 2010, 08:40. Source: Silphium terebinthinaceum PRAIRIE DOCK. Author: Frank Mayfield from Chicago area, USA.
Summary[edit] Description: image of Silphium laciniatum COMPASS PLANT at the James Woodworth Prairie Preserve -. Date: 21 June 2006, 07:48. Source: Silphium laciniatum COMPASS PLANT. Author: Frank Mayfield from Chicago area, USA.
close up image of Silphium terebinthinaceum PRAIRIE DOCK at the James Woodworth Prairie Preserve - a single flower head showing over 30 flowers and buds; blooms occur over a period of about six weeks.
Summary[edit] Description: field image of Silphium terebinthinaceum PRAIRIE DOCK at the James Woodworth Prairie Preserve - multiple stalks with multiple flower buds. Date: 14 July 2006, 07:25. Source: Silphium terebinthinaceum PRAIRIE DOCK. Author: Frank Mayfield from Chicago area, USA.
Summary[edit] Description: English: Silphium laciniatum at Chicago Botanic Garden. Date: 1 September 2016, 23:02:14. Source: Own work. Author: Krzysztof Ziarnek, Kenraiz.
Summary[edit] Description: English: Pollination of Silphium integrifolium observed at Beal Botanical Garden, MSU, East Lansing, MI. Date: 14 August 2009. Source: Own work. Author: DDennisM.
close up image of Silphium integrifolium deamii DEAM'S ROSINWEED at the James Woodworth Prairie Preserve - showing stalk as it begins to divide to create the flower head
close up image of Silphium terebinthinaceum PRAIRIE DOCK at the James Woodworth Prairie Preserve - a single basal leaf at emergence; leaf just beginning to open.
Summary[edit] Description: English: Silphium perfoliatum after winter Deutsch: Silphium perfoliatum Durchwachsene Silphie nach einem strengen Winter im Februar 2012. File:Silphium perfoliatum in Germany.jpg entstand wenige Wochen später an gleicher Stelle !!. Date: 15 February 2012. Source: Own work. Author: Blonder1984.