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PORTULACACEAE

PURSLANE FAMILY

Annual or perennial herb, generally fleshy
Stems generally glabrous
Leaves simple, alternate or opposite, sometimes stipuled
Inflorescence various
Flower bisexual, radial; sepals generally 2(–8), free or fused at base; petals 3–18, free or ± fused; stamens 1–many, free or inserted on corolla; ovary superior or partly inferior, chamber 1, placenta free-central or basal; styles 2–8, generally fused at base
Fruit: capsule, circumscissile or 2–3-valved
Seeds 1–many, 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 50:566–598]
Family description and key to genera by Dieter H. Wilken & Walter A. Kelley.

CLAYTONIA

Kenton L. Chambers

Annual or perennial herb, from stolon, rhizome, tuber, or taproot, glabrous, ± fleshy
Leaves entire; basal 0–many, rosetted; cauline generally 2, generally opposite, free to fully fused into ± 2-toothed disk or cup surrounding stem
Inflorescence: raceme, terminal, 1-sided; pedicels reflexed, becoming erect in fruit
Flower: petals 5, pink or white; stamens 5, epipetalous; ovary chamber 1, placentas basal, style 1, stigmas 3
Fruit: capsule; valves 3, margins rolling inward and forcibly expelling seeds
Seeds 3–6, generally black, generally clearly appendaged
Species in genus: 28 species: North America, e Asia
Etymology: (John Clayton, colonial Am botanist, born 1686)
Reference: [Miller 1978 Syst Bot 3:322–341; Miller & Chambers 1993 Novon 3:268–273]
Some species formerly placed in Montia.

Native

C. gypsophiloides Fisch. & C.A. Mey.

Annual
Stem 3–25 cm, spreading to erect
Leaves: basal 2–15 cm, linear; cauline < 6 cm, linear and free, fused on 1 side, or fully fused into 2-toothed disk
Inflorescence 2–15 cm, long-stalked; flowers 3–30, lowest flower bracted
Flower: sepals 2–3 mm; petals 5–8 mm, generally pinkish; stamens maturing well before stigmas
Fruit 1.5–2 mm
Seed 1–1.5 mm, elliptic, dull; appendage minute
Chromosomes: 2n=16
Ecology: Moist, bare, often stony places, in sun or shade, often on serpentine
Elevation: < 1300 m.
Bioregional distribution: North Coast Ranges, San Francisco Bay Area, South Coast Ranges (Santa Lucia, Temblor mtns)
Synonyms: Montia g. (Fisch. & C.A. Mey.) Howell; M. perfoliata var. nubigena (Greene) Jeps
Cross-pollinated
Horticultural information: DRN: 5, 15, 16, 17 &SHD: 7, 9, 19, 20, 21, 22, 23, 24.

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bioregional map for CLAYTONIA%20gypsophiloides being generated
 


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