Ancistrocarphus filagineus is a North American species of flowering plants in the family Asteraceae, known by the common names woolly fishhooks and hooked groundstar.

[3][4] Ancistrocarphus filagineus grows in many types of habitat, including bare, rocky habitat with clay or serpentine soils and recently burned areas.

It is a petite annual herb rarely more than 15 cm (6 inches) tall.

The linear, lance-shaped, or oval leaves are up to 3 centimeters long and are alternately arranged on the short stems.

The inflorescence is a cluster of a few small star-shaped flower heads a few millimeters wide.