|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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Annual or perennial herb, generally fleshy
Stems generally glabrous
Leaves simple, alternate or opposite, sometimes stipuled
Flower bisexual, radial; sepals generally 2(8), free or fused at base; petals 318, free or ± fused; stamens 1many, free or inserted on corolla; ovary superior or partly inferior, chamber 1, placenta free-central or basal; styles 28, generally fused at base
Fruit: capsule, circumscissile or 23-valved
Seeds 1many, generally black, generally shiny
Genera in family: ± 20 genera, ± 400 species: generally temp Am, Australia, s Africa; some cultivated (Lewisia, Portulaca, Calandrinia )
Reference: [Bogle 1969 J Arnold Arbor 50:566598]
Family description and key to genera by Dieter H. Wilken & Walter A. Kelley.
Perennial, generally from short, thick, ± branched taproot, topped by short, sometimes very thick caudex at or below ground level, sometimes from spheric corm
Stem: aerial parts restricted to inflorescence
Leaves generally in basal rosette, simple, entire or not; base wide; margin generally ± translucent
Inflorescence ± scapose; stems 1many, generally leafless but bracted, sometimes disjointing in age, 1many-flowered
Flower: sepals 28, free, persistent; petals 418, variously colored, overlapping in bud; stamens 5many; styles 28, fused at base, stigmas 28, thread-like
Fruit: capsule, translucent, spheric or ovoid, circumscissile near base
Seeds 2many, dark, generally shiny, smooth or finely tuberculate
Species in genus: ± 20 species: w North America
Etymology: (Captain Meriwether Lewis, 17741809, of Lewis & Clark Expedition)
Reference: [Elliott 1966 Bull Alpine Gard Soc 34]
Horticultural information: DRN, IRR: pots and rock gardens only; DRY when dormant; DFCLT.
Root + caudex generally largest at top, tapered below or short-fusiform or corm-like
Leaves generally several, in rosette, 28 cm, thread-like to linear-lanceolate, fleshy, entire, tapered to expanded base; tip blunt
Inflorescence: stems severalmany, 15 cm, each generally 1-flowered (less often several-flowered); flowers generally included in leaves; bracts 2, at or below middle of stem, ± widely lanceolate, entire or dentate
Flower: sepals 2, ± 1/2 X corolla, ± ovate, margin ± jagged or toothed, rarely glandular, tip pointed, rounded, or truncate; petals 69, 510 mm, obovate, white, pink, or red, often striped, tip ± jagged; stamens ± 8; stigmas ± 4
Ecology: Rocky slopes, wet granite sand or gravel, moist meadows, along streams
Elevation: 17004500 m.
Bioregional distribution: Klamath Ranges, High North Coast Ranges, High Cascade Range, High Sierra Nevada, Western Transverse Ranges (Mount Pinos), San Bernardino Mountains, Warner Mountains, White and Inyo Mountains
Distribution outside California: to British Columbia, Rocky Mtns
Flowering time: JulAug
Synonyms: L. sierrae Ferris
Ill-defined, probably of hybrid origin; intergrades and apparently hybridizes with L. nevadensis , L. glandulosa , sometimes L. triphylla.
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