The finely divided, fern-like leaves and spherical umbels readily identify lomatium parryi
as a member of the carrot (apiaceae) family. Leaves grow around the base, from which rise thick, unbranched, hairless, reddish-green stems topped by a spherical inflorescence of tiny yellow flowers at the end of thin green stalks. Flowers have 8 to 15 ray florets and five protruding stamens; all components are just a few mm in length. Beneath the individual flower clusters, at the end of the pedicels, are between 3 and 8 bractlets, which may be entire or divided.
Leaves are divided twice or sometimes three times, into small, narrow leaflets at most one third of an inch long. They have a distinct petiole (stalk) around 3 inches in length. Leaflet tips are often purplish. Plants usually retain dead leaves and flower stalks from previous years.