winding mariposa lily

Plants rarely bulbose; bulb coat, when present, membranous. Stems twining or straggling over ground, branching, 1-2 dm, usually sinuous. Leaves: basal, withering; blade linear, attenuate. Inflorescences 1-4-flowered; bracts 1-3 cm. Flowers erect; perianth open, campanulate, each member with transverse yellow band; sepals lanceolate to lanceolate-ovate, 2-3 cm; petals white with lilac tinge, darker veined, especially distally, sometimes with purple blotch distal to gland, obovate to cuneate, 3-4 cm, with sparse or dense, short or long hairs near gland, apex rounded; glands transverse-lunate or wider, densely short-hairy; filaments 6-10 mm; anthers oblong, 5-7 mm, apex obtuse or acute. Capsules erect, lanceoloid, angled, stout, 3-4 cm. Seeds light beige, flat. 2n = 14.