Helenium pinnatifidum is a North American perennial plant in the sunflower family, commonly known as southeastern sneezeweed.[2] It is found in the southeaster United States (Alabama, Georgia, Florida, and the Carolinas).[3]

Helenium pinnatifidum is an perennial herb up to 80 cm (31.5 in) tall, with small wings running down the sides of the stems. Leaves are pinnatifid, meaning deeply divided into many small parts. One plant generally produces only 1-3 hemispherical flower heads, about 2 cm (1 in) across. Each head can have 800 or more minuscule disc flowers 4.0–5.5 mm (0.16–0.22 in) across, each yellow toward the bottom but yellow-brown toward the tip. There are also 13-34 yellow ray flowers, each with three prominent lobes at the tip.[2]

References

  1. ^ The Plant List, Helenium pinnatifidum (Schwein. ex Nutt.) Rydb.
  2. ^ a b Flora of North America, Helenium pinnatifidum (Schweinitz ex Nuttall) Rydberg 1915. Southeastern sneezeweed
  3. ^ Biota of North America Program 2014 county distribution map

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