One identifying feature of conioselinum scopulorum
is the presence of relatively long, linear, pointed bractlets beneath the flowers (3 to 6 per umbellet), often projecting out beyond. The base of the compound umbel may also have a few similar bracts. Buds are often pinkish, the flowers pure white. Stems are stout and unbranched, growing vertically upwards. Leaves are divided up to three times into coarsely toothed leaflets. The leaf petiole is similar in length to the blade - up to 8 inches. Leaves and stems are hairless. Leaf bases are conspicuously sheathed.
The inflorescence is a compact, flat-topped cluster of between 9 and 15 umbellets, on ribbed, green stalks (rays) at most 2 inches long. Each umbellet contains around a dozen small white flowers. Fruits are green, and strongly ribbed.