Plant: shrub, 100-300(-400) cm tall; stems erect or ascending, wandlike, branching above, glabrous except on very young growth, conspicuously white-glaucous, in age leafless Leaves: opposite or in whorls of 3, narrowly linear, 1-3 cm long, early-deciduous Inflorescence: UMBELS lateral at the upper nodes, 3-5 cm broad, the peduncles 1-3 cm long, sparsely hairy to glabrate, the pedicels more or less wooly Flowers: with the calyx lobes 3-4 mm long; corolla drying greenish white or flushed with pale purple, the lobes 6-9 mm long; hoods drying yellow brown, ascending, oblong-quadrate, 2-3 mm long, 1.6-2.4 mm broad, ca. 1 mm shorter than the gynostegium, the horns attached the full length of the hoods and free apically for ca. 2 mm, the free portion digitate, mostly straight, appressed to the hood apices, scarcely exserted toward the stigma head; anther wings 2 mm long; corpusculum 0.3 mm long, the pollinia 1.3-1.5 mm long Fruit: FOLLICLES pendulous on spreading to drooping peduncles and pedicels, 8-15 cm long Misc: Rocky desert flats and slopes; 150-750 m (500-2500 ft); Sep-Jun REFERENCES: Sundell, Eric. 1994. Asclepiadaceae. J. Ariz. – Nev. Acad. Sci. Volume 27, 169-187.