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FNA | Family List | FNA Vol. 4 | Portulacaceae | Lewisia

3. Lewisia columbiana (Howell ex A. Gray) B. L. Robinson in A. Gray et al., Syn. Fl. N. Amer. 1: 269. 1897.

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.

1 Petals (10-)12-13 mm; cauline leaves usually absent; basalmost bract margins glandular-toothed; basal leaf blades ± linear, 2-3 cm....   3b var. rupicola
+ Petals 5-11 mm; cauline leaf and/or basalmost bract margins entire or eglandular-toothed; basal leaf blades narrowly oblanceolate, 2-10 cm   (2)
2 (1) Petals 7-11 mm; basal leaf blades 2-10 cm   3a var. columbiana
+ Petals 5-8(-10) mm; basal leaf blades 2-4 cm   3c var. wallowensis


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