File:Helianthus decapetalus L. Thin-leaved or Wild Sunflower..png

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Summary

Description	English: Botanical illustration of Helianthus decapetalus from 1913. I took a screen shot of the original, because the version uploaded to the USDA website had been drawn on.
Date	15 February 2014, 14:44:22
Source	Screen shot from free Google book of; Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 3: 484.
Author	Britton, N.L., and A. Brown.

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