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Montia chamissoi

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: MontiaView DescriptionDichotomous Key

Habit: Annual, perennial herb, glabrous, +- fleshy, +- aquatic or not, matted or not. Leaf: cauline > 2, alternate or opposite, free, entire. Inflorescence: raceme, 1-sided; lowest flower generally bracted; pedicel recurved, erect in fruit. Flower: petals (3)5, equal or 2 larger, white to pink; stamens (3)5, epipetalous; ovary chamber 1, placentas basal, style 1, stigmas 3. Fruit: valves 3, margins rolled in, forcibly expelling seeds. Seed: 1--3, generally black, smooth to tubercled, appendaged or not.
Species In Genus: 12 species: Worldwide. Etymology: (Giuseppe Monti, Italian botanist, 1682--1760) Note: Sometimes divided into 9 genera.
eFlora Treatment Author: John M. Miller & Kenton L. Chambers

Montia chamissoi (Spreng.) Greene
Habit: Perennial herb 2--30 cm, from leafy stolons with pink overwintering bulblets, prostrate to erect, floating or not, often tufted or matted. Leaf: opposite, 5--50 mm, oblanceolate. Inflorescence: generally few, some axillary; flowers 2--8, often replaced by bulblets. Flower: sepals 1.5--2 mm, spheric; petals 5--9 mm, equal, pink or white; stamens 5. Fruit: 1--1.5 mm. Seed: 1--1.3 mm; tubercles low, rounded; appendage +- flat. Chromosomes: 2n=22.
Ecology: Wet, sandy or loamy soil, seeps, wet meadows; Elevation: 1100--3700 m. Bioregional Distribution: KR, NCoRH, CaR, SNH, TR, PR, GB; Distribution Outside California: to Alaska, Montana, Colorado, New Mexico; also central Canada, north-central United States. Flowering Time: Jun--Aug
eFlora Treatment Author: John M. Miller & Kenton L. Chambers
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botanical illustration including Montia chamissoi


Citation for this treatment: John M. Miller & Kenton L. Chambers 2016. Montia chamissoi, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on February 10, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on February 10, 2016.

Montia chamissoi
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© 2000 Gary A. Monroe
Montia chamissoi
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© 2009 Keir Morse
Montia chamissoi
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© 2005 Steve Matson
Montia chamissoi
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© 2003 Steve Matson
Montia chamissoi
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© 2009 Thomas Stoughton
Montia chamissoi
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© 2009 Barry Breckling

More photos of Montia chamissoi in CalPhotos

Geographic subdivisions for Montia chamissoi:
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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).

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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.