Taproots gradually ramified distally. Stems ± erect, becoming lax with age, 20-60 cm. Leaves: basal leaves withering after anthesis, abruptly or gradually narrowed to broad petiole, blade oblanceolate, 5-25 cm, margins entire, apex acute to obtuse; cauline leaves withering after anthesis, alternate, ± sessile, distalmost intergrading with bracts, reduced, blade lanceolate or linear-lanceolate, 15-125 mm, margins entire, apex acute to obtuse. Inflorescences 3-7-branched paniculate cymes, 20-100-flowered; bracts alternate proximally, 2 at each flowering node distally, ovate to orbiculate, 10-20 mm, margins glandular-toothed, apex acute proximally to rounded distally. Flowers pedicellate, not disarticulate in fruit; sepals 2, suborbiculate to broadly obovate, 2-4 mm, herbaceous at anthesis, margins glandular-toothed, apex truncate to rounded; petals 6-7, pale pink, veins magenta, base yellow-green, obovate, 7.5-10 mm; stamens 4-5; stigmas 3; pedicel 5-10 mm. Capsules 3-4 mm. Seeds 2 mm, shiny. 2n = ca. 24.

Flowering spring. Shaded, mossy, rocky slopes; of conservation concern; 500-2100 m; Calif.

Lewisia congdonii is found only in Mariposa County, California.