Shrubs to 1.8 m tall. Roots attenuate toward tip. Turions present. Stems gray or gray-brown. Proximal leaves 2-ternate; leaflets ovate-orbicular to orbicular, 4--6 × 3.5--4.5 cm, villous along veins or throughout, deeply 3-lobed; lobes again lobed, acute to rounded at apex. Flowers solitary, terminal, single, 10--16 cm wide. Bracts 2 or 3, long elliptic, unequal. Sepals 4 or 5, green, broadly ovate, 2.5--5 × 1.8--2.5 cm, apex rounded. Petals 5--11, white, occasionally pinkish at base or margin, obovate, 4.5--7.2 × 4--6 cm, apex irregularly incised. Filaments pink or purple, white distally, 8--10 mm; anthers yellow, linear, 8--11 mm. Disc wholly enveloping carpels, red-purple, leathery, apex dentate. Carpels 5, densely tomentose. Stigmas red. Follicles oblong, densely brown-yellow tomentose. Fl. Apr--May, fr. Aug. 2n = 10*.
Home