Jepson eFlora: Taxon page
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Lewisia congdonii

Higher Taxonomy
Family: MontiaceaeView DescriptionDichotomous Key

Habit: Annual to perennial herb; generally fleshy. Stem: 1--many, generally glabrous. Leaf: simple, alternate or opposite. Inflorescence: axillary or terminal; cyme, raceme, panicle, umbel, or flower 1. Flower: bisexual, radial; sepals generally 2(9), free; petals (1)2--19, free or +- fused; stamens 1--many, epipetalous or not, anthers pink, rose, or yellow; ovary superior, chamber 1, ovules 1--many, placenta basal or free-central; styles (0)1--8, generally fused at base, branched. Fruit: capsule, circumscissile or 2--3-valved. Seed: 1--many, shiny or +- pebbly or sculptured, black or gray, generally with oil-filled appendage as food for ants.
Genera In Family: +- 22 genera, +- 230 species: generally temperate America, Asia, Australia, Europe, Kerguelen Is, New Zealand, southern Africa, poorly represented in Europe; some cultivated (Lewisia, Calandrinia). Note: All CA genera previously included in Portulacaceae; details of flowers, seeds require 20× magnification.
Unabridged Note: May include Hectorellaceae.
eFlora Treatment Author: John M. Miller, except as noted
Scientific Editor: Thomas J. Rosatti.
Genus: LewisiaView DescriptionDichotomous Key

Leaf: many, dense-rosetted, 2--10 cm, narrowly oblanceolate, flat or abaxially grooved, fleshy, entire, tapered to base, tip blunt. Inflorescence: stems several, 12--30 cm, each with open, many-flowered panicle; flowers exserted from leaves; bracts among flowers, few below, gland-toothed; pedicel 5--13 mm. Flower: sepals 2, +- 1/4 × corolla, +- round, gland-toothed; petals 4--11, 5--13 mm, ovate, rose, pink, or white with magenta veins, tip notched; stamens 5--6; stigmas 2--3. Fruit: 3--6 mm. Seed: 1--7, 1.5--2 mm. Chromosomes: n=15.
Note: Hybrid of Lewisia cotyledon, Lewisia leeana.

Lewisia congdonii (Rydb.) S. Clay
Leaf: few to many in rosette; cauline few, 5--30 cm, narrowly oblanceolate to obovate, entire, tapered to long, slender petiole, tip acute or obtuse. Inflorescence: stems 1--7, 2--6 dm, each with open, 20--100-flowered, panicle-like cyme; flowers well-exserted from leaves; bracts among flowers and below, awl-like, gland-toothed; pedicel 5--10 mm. Flower: sepals 2, 1/4--1/3 × corolla, +- round, margin gland-toothed; petals 6--7, +- 8 mm, lanceolate, pale pink, base yellow-green, veins magenta, tip jagged; stamens 4--5; stigmas 3. Fruit: 3--4 mm. Seed: 1--few, 2 mm. Chromosomes: n=+-12.
Ecology: Granite, metamorphic outcrops, crevices, rock slides, chaparral, woodland, conifer forest; Elevation: 500--2800 m. Bioregional Distribution: c SN. Flowering Time: Apr--Jun
Synonyms: Lewisia columbiana (Howell ex A. Gray) B.L. Rob. subsp. congdonii (Rydb.) Ferris; Oreobroma congdonii Rydb.
eFlora Treatment Author: John M. Miller
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Lewisia cantelovii
Next taxon: Lewisia cotyledon

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botanical illustration including Lewisia congdonii


Citation for this treatment: John M. Miller Lewisia congdonii, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on November 23, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017, Jepson eFlora,, accessed on November 23, 2017.

Lewisia congdonii
click for enlargement
© 1999 John Game
Lewisia congdonii
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© 2009 Barry Breckling
Lewisia congdonii
click for enlargement
© 2010 Aaron Schusteff
Lewisia congdonii
click for enlargement
© 2009 Barry Breckling
Lewisia congdonii
click for enlargement
© 2010 Aaron Schusteff
Lewisia congdonii
click for enlargement
© 2009 Barry Breckling

More photos of Lewisia congdonii in CalPhotos

Geographic subdivisions for Lewisia congdonii:
c SN.
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.