Description: Perennial plant growing to 1.5 m (60 in.) tall. Stems rough, pubescent. Leaves large, basal leaves to 1 m (39 in.) in diameter, stem leaves to 40 cm (15.7 in.); all leaves pinnate with 9 leaflets arranged in groups of three; leaflets 8 - 16 cm (3 - 6 in.) long. Inflorescence in umbels (umbrella-like), with up to 40 flowers on stalks 2 - 12 mm (to 0.5 in.) long. Flower sepals 5, petals 5, white. Fruit a capsule, flattened, 8 - 14 mm (to 0.6 in.) long, narrow wings which are either rough or smooth at maturity. Time of flowering: July to August.
Habitat: Occurs in mixed conifer and aspen forest communities, near springs, gravelly washes, ephemeral streams, gullies, montane slopes, shady crevices, and avalanche chutes. Elevations: 2,000 - 2,800 m
(6,600 - 9,200 ft).
Range: Endemic to the Spring Mountains. Occurs in Kyle Canyon in the Spring Mountains National Recreation Area, and in the Red Rock
Canyon National Conservation Area.
Comments: Pedicels and major stalks are rough to the touch, hence the specific name scabrida.