|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
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
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.
Annual or perennial herb, from stolon, rhizome, tuber, or taproot, glabrous, ± fleshy
Leaves entire; basal 0many, 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 36, 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 3:322341; Miller & Chambers 1993 Novon 3:268273]
Some species formerly placed in Montia.
Stem 140 cm, spreading to erect
Leaves: basal 125 cm, blade < 4 cm, < 3 X longer than wide, elliptic to reniform, tip rounded to acute, petiole linear; cauline pair fused, disk-like, < 10 cm diam, round or squarish (or free on 1 side)
Inflorescence stalked or sessile, open or dense, 1-bracted at base; flowers 540
Flower: sepals 1.55 mm; petals 26 mm, white or pinkish
Fruit 1.54 mm
Seed 1.22.7 mm, ovate to round, shiny, smooth
Ecology: Common. Vernally moist, often shady or disturbed sites
Elevation: < 2000 m.
Bioregional distribution: California Floristic Province, Great Basin Floristic Province, Mojave Desert
Distribution outside California: to British Columbia, Montana, C.America
Highly variable; subspp. difficult because of environmental plasticity, genetic mixing among polyploids, and geog overlap of distinct, self-pollinating forms.
Leaves: basal round-deltate to reniform, tip short-pointed; cauline pair generally 2-angled, angles short-pointed
Habitats of sp.
Bioregional distribution: Northwestern California, Central Western California, Southwestern California
Distribution outside California: Arizona, Mexico
Intergrades with subsp. perfoliata , C. parviflora , C. rubra
Horticultural information: TRY.