Plant: Subshrub; stems 2-6 dm tall, branched, strigose Leaves: alternate, short-petiolate, lanceolate, sparsely hirsute, 20-35 mm long, 6-12 mm wide Flowers: yellow; calyx lobes linear, hirsute, often unequal, 2-9 mm long; corolla tube 6-9 mm long, pubescent externally, the lobes ovate, 7-15 mm long Fruit: a pair of slender, elongate follicles, 5-9 cm long; SEEDS black, noticeably ridged, tapering slightly at the ends, 6-8 mm long, whitish comose Misc: Rocky slopes in desert scrub and desert grassland; 750-1600 m (2500-5200 ft); Mar-Oct REFERENCES: McLaughlin, Steven, P. 1994. Apocynaceae. J. Ariz. - Nev. Acad. Sci. Volume 27, 164-168.