Softly woody shrub to 2 m, aromatic when crushed. Leaves usually bipinnatisect, segments linear, margins revolute, often discolorous and grey-felted beneath, glabrescent above. Flower heads radiate, solitary, yellow to orange; bracts tailed. Achenes with 2 cuneate cavities.
Rhizomatous perennial with erect stems to 30 cm. Leaves pinnatisect, densely white-felted, undulate, dentate, recurved. Flower heads solitary, disc black, rays orange with red reverse; outer involucral bracts with linear, felted, reflexed tail.