白花绿绒蒿 bai hua lü rong hao

Herbs, monocarpic. Taproot napiform to cylindrical, swollen, with a few fibers at top. Stem very short, sometimes extending to 13 cm. Basal leaves few; petiole long, 2-5.5 cm; blade glaucous abaxially, narrowly oblong to elliptic-oblong, 1.5-6.2 × 0.8-1.4 cm, both surfaces subglabrous or sparsely setose, base narrowed into petiole, margin entire to slightly lobed. Middle and upper leaves: petiole ca. 2.5 cm; blade generally larger, 4.5-7 × 1.6-2 cm, pinnately lobed, with up to 5 pairs of pinnae; lobes acute to rounded, apically undulate. Flowers solitary at leaf axils, half-nodding. Pedicel 6.7-25 cm, sparsely setose or glabrous. Sepals oval, sparsely setose to glabrous. Petals 4-8, white, ovate to orbicular, 18-28 × 2.2-2.8 cm, apex rounded, fluted, with an undulate margin. Filaments white, linear; anthers yellow or orange. Ovary elliptic, densely appressed setose; styles 3-5 mm. Capsule cylindric-fusiform, 15-25 × 6-7 mm, with sparse ascending stiff hairs; styles 4-5 mm, stigmas capitate. Fl. Jul-Aug.

● Moist mossy banks, cliff ledges, open leafy banks; 3700-4600 m. SE Xizang.