Quamoclidion oxybaphoides A. Gray, Amer. J. Sci. Arts, ser. 2, 15: 320. 1853; Allionia oxybaphoides (A. Gray) Kuntze, Allioniella oxybaphoides (A. Gray) Rydberg

Stems decumbent to prostrate, often tangled in other vegetation, 2-12 dm, herbaceous, puberulent in lines or throughout, glandular or not. Leaves spreading; petiole 0.5-3.5 cm; blade broadly deltate or ovate, 1.5-8 × 1-7.5 cm, fleshy, base cordate, apex usually acute or acuminate (rounded), surfaces glabrous or pubescent, and then often glandular. Inflorescences loosely and narrowly cymose; involucres solitary or clustered at ends of branches, or solitary in axils, 5-9 mm, lobes triangular, base 50-70% of height. Flowers 3 per involucre; perianth purplish to pale pink (white), 0.5-0.9 cm. Fruits olive, dark brown and black-mottled, or evenly black, sometimes faintly marked with 5 shallow grooves, broadly obovoid to nearly spheric, 2.5-3.5 mm, smooth or slightly rugose. 2n = 60.

Flowering spring-fall. Brush or boulders, banks in woodlands, moist areas; 1400-2600 m; Ariz., Colo., Nev., N.Mex., Okla., Tex., Utah; Mexico (Chihuahua, Coahuila, Nuevo León).