field image of Silphium integrifolium deamii DEAM'S ROSINWEED at the James Woodworth Prairie Preserve - a stand at full bloom showing foliage that is unique and distinct.
close up image of Silphium terebinthinaceum PRAIRIE DOCK at the James Woodworth Prairie Preserve - a single full bloom showing multiple ray and disk flowers as well as some detail of stigmas and anthers.This species is featured in the book Abundant Splendor: Wildflowers of the Tall Grass Prairie, which is now available for purchase. Contact frank@black-sweater-art.com for more information.
Summary[edit] Description: close up image of Silphium terebinthinaceum PRAIRIE DOCK at the James Woodworth Prairie Preserve - a trio of basal leaves almost at full open. Date: 5 May 2010, 08:23. Source: Silphium terebinthinaceum PRAIRIE DOCK. Author: Frank Mayfield from Chicago area, USA.
Summary[edit] Description: The other species and one of the best foliage plants i know of for the herbaceous border. Date: 15 June 2012, 14:10. Source: Silphium laciniatum. Author: peganum from Small Dole, England.
close up image of Silphium terebinthinaceum PRAIRIE DOCK at the James Woodworth Prairie Preserve - a single flower stalk beginning to show flower head with about 6 flower buds.
Summary[edit] Description: Polski: Rożnik przerośnięty (Silphium perfoliatum), Ogród Botaniczny PAN w Warszawie. Date: 2 October 2017, 12:19:00. Source: Own work. Author: Salicyna.
Description: Much more delicate with a more open inflorescence on a more slender stem. Both are very tall however, with the few flowers held well above the giant leaves. Date: 21 August 2013, 18:57. Source: Silphium terebinthinaceum. Author: peganum from Henfield, England.
Summary[edit] Description: English: Silphium integrifolium in the Missouri Botanical Garden, St. Louis. Date: 4 September 2016, 22:06:40. Source: Own work. Author: Krzysztof Ziarnek, Kenraiz.
close up image of Silphium integrifolium deamii DEAM'S ROSINWEED at the James Woodworth Prairie Preserve - a flower bud at open, prior to the emergence of either ray or disk flowers.