Distribution: Occurring east of the Cascades crest in central and south-central Washington; central Washingotn to Wasco County, Oregon.
Habitat: Open hillsides, often with sagebrush, from valleys to subalpine.
Conservation Status: Not of concern
Perennials with an elongate, thickened taproot, the plants acaulescent.
Leaves attached to the top of the tuberous taproot, pinnately or ternate-pinnately divided, the leaf segments narrow, 1-5 mm. long
Rays of the umbel 5-20, elongating unequally; flowers yellow; involucel of broad bracklets which are fused from about halfway nearly to the tip, cup-like; pedicels short, 1-3 mm. long.
Fruit usually finely puberulent, ovate, 6-7 mm. long and about half that wide, the wings less that half as wide as the body.
The smaller size and cuplike involucels distinguish it from the similar L. cous.