Calandrinia columbiana Howell ex A. Gray, Proc. Amer. Acad. Arts 22: 277. 1887; Oreobroma columbianum (Howell ex A. Gray) Howell; Talinum denticulatum Poellnitz

Taproots gradually ramified distally. Stems procumbent to suberect, 10-12(-30) cm. Leaves: basal leaves evergreen, sessile, blade narrowly linear to linear-oblanceolate, flattened or slightly grooved on adaxial surface, 2-10 cm, margins entire, apex obtuse to acute; cauline leaves absent, or alternate and intergrading with bracts, blade linear, 5-18 mm, margins entire or eglandular-toothed, apex acute. Inflorescences paniculate cymes, 20-100-flowered; bracts alternate proximally, 2 at each flowering node distally, ovate, 2-5 mm, margins toothed to glandular-toothed, apex obtuse. Flowers pedicellate, not disarticulate in fruit; sepals 2, suborbiculate, 1.5-3 mm, herbaceous at anthesis, margins glandular-toothed, apex rounded to truncate; petals 4-9(-11), white with pink veins to pink to magenta, oblong or obovate, 5-13 mm; stamens 5-6; stigmas 2 or 3; pedicel 5-13 mm. Capsules 3-6 mm. Seeds (1-)3-7, 1.5-2 mm, shiny, shallowly warted.

Varieties 3 (3 in the flora): w North America.