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close up image of Silphium integrifolium deamii DEAM'S ROSINWEED at the James Woodworth Prairie Preserve - showing a single bloom at full open with detail of disk flowers blooming.
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field image of Silphium terebinthinaceum PRAIRIE DOCK at the James Woodworth Prairie Preserve - a single stalk at full bloom showing a typical flower head with about two dozen flowers and buds.
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image of Silphium laciniatum COMPASS PLANT at the James Woodworth Prairie Preserve -
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close up image of Silphium integrifolium deamii DEAM'S ROSINWEED at the James Woodworth Prairie Preserve - several flowers after blooming as seeds mature; one is beginning to show seed dispersal structures.
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close up image of Silphium terebinthinaceum PRAIRIE DOCK at the James Woodworth Prairie Preserve - a trio of basal leaves almost at full open.
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Hof, Bavaria, Germany
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image of Silphium laciniatum COMPASS PLANT at the James Woodworth Prairie Preserve -
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close up image of Silphium integrifolium deamii DEAM'S ROSINWEED at the James Woodworth Prairie Preserve - showing opposite leaf pairs that rotate 90 degrees as each pair goes up the stalk, giving this species its stiff, formal look.
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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).
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close up image of Silphium integrifolium deamii DEAM'S ROSINWEED at the James Woodworth Prairie Preserve - showing two flower heads with many flower buds and three full open blooms.
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field image of Silphium terebinthinaceum PRAIRIE DOCK at the James Woodworth Prairie Preserve - multiple stalks with multiple flower buds.
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Hof, Bavaria, Germany
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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.
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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.
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field image of Silphium integrifolium deamii DEAM'S ROSINWEED at the James Woodworth Prairie Preserve - a large stand not yet blooming.
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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.
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Hof, Bavaria, Germany
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image of Silphium laciniatum COMPASS PLANT at the James Woodworth Prairie Preserve -
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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.
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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.
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image of Silphium laciniatum COMPASS PLANT at the James Woodworth Prairie Preserve -
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close up image of Silphium integrifolium deamii DEAM'S ROSINWEED at the James Woodworth Prairie Preserve - several flower heads at full bloom.
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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.