Lewisia leeana

(Porter) B. L. Robinson in A. Gray et al.
in A. Gray et al., Syn. Fl. N. Amer. 1: 269. 1897.
Endemic
Basionym: Calandrinia leeana Porter Bot. Bull. (Hanover) 1: 49. 1876 (as leana)
Synonyms: Lewisia eastwoodiana Purdy Oreobroma leeanum (Porter) Howell
Treatment appears in FNA Volume 4. Treatment on page 481. Mentioned on page 477, 480.

Taproots gradually ramified distally. Stems spreading or suberect, 8–20 cm. Leaves: basal leaves evergreen, sessile, blade linear, ± terete, 1.5–6 cm, margins entire, apex obtuse; cauline leaves alternate, intergrading with bracts, blade narrowly lanceolate, 5 mm, margins entire, apex acute. Inflorescences paniculate cymes, 50–70(–100)-flowered; bracts several, alternate proximally, 2 at each flowering node distally, ovate to narrowly lanceolate, 2–5 mm, margins glandular-toothed, apex acute. Flowers pedicellate, not disarticulate in fruit; sepals 2, suborbiculate, 1–4 mm, herbaceous at anthesis, margins glandular-toothed, apex truncate; petals 5–8, magenta, lavender, or white with or without magenta veins, obovate, 5–7 mm; stamens 4–8; stigmas 2; pedicel 3–15 mm. Capsules 4–5 mm. Seeds 1–2, 2–2.5 mm, shiny, smooth. 2n = 14.


Phenology: Flowering summer.
Habitat: Open north- or northwest-facing granitic or serpentine slopes or cliffs
Elevation: 1300-3400 m

Discussion

Lewisia leeana is known only from northwestern California and southwesternmost Oregon, and a disjunct population in Fresno County, California. As discussed by B. Mathew (1989b), Lewisia ×whiteae Purdy (California) is a natural, constantly recurring hybrid between L. leeana and L. cotyledon. In their narrowly spatulate leaves, the hybrids resemble L. columbiana out of range (cf. L. T. Dempster 1993); the flowers are reportedly more deeply colored.

Selected References

None.

Lower Taxa

None.

... more about "Lewisia leeana"
Mark A. Hershkovitz +  and Sean B. Hogan +
(Porter) B. L. Robinson in A. Gray et al. +
Calandrinia leeana +
Calif. +  and Oreg. +
1300-3400 m +
Open north- or northwest-facing granitic or serpentine slopes or cliffs +
Flowering summer. +
in A. Gray et al., Syn. Fl. N. Amer. +
Lewisia eastwoodiana +  and Oreobroma leeanum +
Lewisia leeana +
species +