Dicentra formosa subsp. formosa 'Alba'

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.