Helenium linifolium is a North American perennial plant in the sunflower family, commonly known as slimleaf sneezeweed.

[2][3] Helenium linifolium is an annual herb up to 80 cm (32 inches) tall, with wings running down the sides of the stems.

Leaves are long and narrow, almost thread-like, merging with the wings on the stem.

One plant can have 100 or more small spherical or egg-shaped flower heads.

Each head has up to 500 disc flowers, each yellow-green toward the bottom but brown or purple toward the tip.