Helenium amarum var. amarum

Family: Asteraceae
Common Names: Yellow Dicks, Yellow Bitterweed, Sneezeweed 

Native to USA:  AL, AR, CA, CT, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, MI, MO, MS, NC, NE, OH, OK, PA, SC, TN, TX, VA, WI 

Additional Resources:
Flora of North America