Ten-petal Sunflower – Native Plant of the Day 11/07/2023
Photo from 9/17/2011. Location: Grundy County, TN.
More photos / info at the  Helianthus decapetalus detail page.

Ten-petal Sunflower – Helianthus decapetalus

Also NPOD 11/07/2011, 11/07/2012, 11/07/2013, 11/07/2014, 11/07/2015, 11/07/2016, 11/07/2017, 11/07/2018, 11/07/2019, 11/07/2020, 11/07/2021, 11/07/2022