Perennial rhizomatous herb. Leaves basal, 1-pinnate, 3–4-pinnatisect, ultimate segments oblong, 10–20(–50) mm long, 3–4(–8) mm wide, usually 3-toothed at apex. Inflorescence paniculate, 2–30-flowered; scape to 60 cm long; bracts linear-lanceolate, 4–7(–12) mm long. Flowers pendent, white; sepals lanceolate to ovate, 2–7 mm long; corolla ovate-cylindric, (12–)15–19(–24) mm long, outer petals cordate, reflexed at apex for 3–5 mm, inner petals with linear claw, blade 2–4 mm wide; filaments of each stamen bundle connate from 2–3 mm above the base. Capsule oblong, 4–5 mm diam. Flowers spring–summer.
Native to western North America, grown as an ornamental, sparingly established in Victoria.
This cultivar is distinguished by its white flowers. Typical forms of subspecies formosa may also have pink to purple flowers. A second subspecies, oregana is distinguished by its cream to yellow coloured flowers and distinctly glaucous leaves.
