Plant: Shrubs or suffrutescent perennials, 30-150 cm tall; stems erect or ascending, branching, bearing numerous raised leaf scars below, pubescent at least on leafy, younger growth; milky sap Leaves: spirally approximate, crowded, sessile, narrowly linear, resembling pine needles, the margins revolute, 1-6 cm long, ca. 1 mm broad, mostly with a few scattered hairs INFLORESCENCE: UMBELS subterminal or lateral at several of the upper nodes, 2-4 cm broad, the peduncles 0.5-2 cm long Flowers: small; calyx lobes 2-3 mm long; corolla white and typically pink- or purple-tipped outside, the lobes ca. 4-5 mm long; hoods drying yellow brown, erect or ascending, ovoid, oblong-quadrate in the lower half, narrowed in the middle on the inner face to an attenuate, rounded tip, (2.6-)3-3.6(-4) mm long, 1-1.4 mm broad in the middle, ca. 1-2 mm longer than the gynostegium, the horns attached to about the middle of the hoods, the free portion 0.5-1 mm long, radially flat or subdigitate, erect, scarcely exserted to about the same height as the gynostegium; anther wings 1-1.2 mm long; corpusculum ca. 0.25 mm long, the pollinia ca. 0.8 mm long Fruit: FOLLICLES erect or ascending on deflexed pedicels, 3-6 cm long Misc: Rocky slopes and canyons, mts; 800-1750 m (2600-5800 ft); Feb-Dec REFERENCES: Sundell, Eric. 1994. Asclepiadaceae. J. Ariz. – Nev. Acad. Sci. Volume 27, 169-187.