Helenium pinnatifidum is a North American perennial plant in the Sunflower Family, commonly known as Southeastern sneezeweed. It is found in the southeaster United States (Alabama, Georgia, Florida, and the Carolinas).Helenium pinnatifidum is an perennial herb up to 80 cm (32 inches) tall, with small wings running down the sides of the stems. Leaves are pinnatifid, meaning deeply divided into many small parts.