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Claytonia exigua subsp. exigua

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: ClaytoniaView DescriptionDichotomous Key

Habit: Annual, perennial herb, from stolon, rhizome, tuberous root, or taproot, glabrous, +- fleshy. Leaf: entire; basal generally 0--many, rosetted; cauline generally 2, +- opposite, free, +- fused on 1 side, or fused into +- disk. Inflorescence: terminal, raceme, 1-sided; pedicel reflexed, in fruit erect. Flower: petals 5, pink or white; stamens 5; ovary chamber 1, placentas basal, style 1, stigmas 3. Fruit: valves 3, margins inrolling, forcibly expelling seeds. Seed: 3--6, generally black, generally appendaged.
Species In Genus: 27 species: Central America, North America, eastern Asia, Siberia. Etymology: (John Clayton, colonial American botanist, 1694--1773)
eFlora Treatment Author: John M. Miller & Kenton L. Chambers
Species: Claytonia exiguaView Description 

Habit: Annual, +- glaucous. Stem: 1--15 cm, spreading or erect. Leaf: basal < 12 cm, +- linear; cauline < 8 cm. Inflorescence: sessile to long-stalked; flowers 3--15, lowest bracted. Flower: sepals 1.5--3 mm; petals 2--5 mm, white or +- pink; anthers maturing +- with stigmas. Fruit: 1.5--2.5 mm. Seed: 1--1.5 mm, elliptic, dull; appendage minute.
Note: Self-pollinated.

Claytonia exigua Torr. & A. Gray subsp. exigua
Leaf: cauline linear and free or crescent-shaped and +- fused on 1 side. Flower: petals 2--5 mm, white or +- pink. Chromosomes: 2n=16,32,48.
Ecology: Dry or moist, disturbed bare clay to sandy soils, often serpentine; Elevation: < 1000 m. Bioregional Distribution: NW, SNF, GV, CW, TR, PR; Distribution Outside California: to British Columbia. Flowering Time: Apr--Jul
Synonyms: Montia rosulata Eastw.; Montia spathulata (Douglas ex Hooker) Howell, inval.; Montia spathulata var. exigua (Torr. & A. Gray) B.L. Rob.; Montia spathulata var. rosulata (Eastw.) J.T. Howell; Montia spathulata Hook. var. spathulata
eFlora Treatment Author: John M. Miller & Kenton L. Chambers
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botanical illustration including Claytonia exigua subsp. exigua


Citation for this treatment: John M. Miller & Kenton L. Chambers 2017. Claytonia exigua subsp. exigua, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on October 16, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on October 16, 2017.

Claytonia exigua subsp. exigua
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© 2014 Neal Kramer
Claytonia exigua subsp. exigua
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© 2009 Keir Morse
Claytonia exigua subsp. exigua
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© 2014 Neal Kramer
Claytonia exigua subsp. exigua
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© 2016 Vernon Smith
Claytonia exigua subsp. exigua
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© 2017 Steve Matson
Claytonia exigua subsp. exigua
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© 2014 Neal Kramer

More photos of Claytonia exigua subsp. exigua in CalPhotos

Geographic subdivisions for Claytonia exigua subsp. exigua:
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.