Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
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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.

CALANDRINIA

Walter A. Kelley

Annual, perennial herb, ± fleshy, glabrous or glaucous
Stems several–many, prostrate to erect, 3–45 cm
Leaves simple, alternate; blade linear to spoon-shaped, cylindric or flat
Inflorescence: raceme or panicle; bracts scarious or leaf-like
Flower: sepals 2, overlapping, persistent in fruit; petals 3–7, generally 5, red or white; stamens 3–15; style 3-branched
Fruit: capsule, 3-valved from tip
Seeds many, ovate to ± elliptic, generally black, smooth, finely tuberculate, or with a fine, net-like pattern, short-hairy or not
Species in genus: 150 species: w Am, Australia
Etymology: (J.L. Calandrini, Switzerland, born 1703)
Reference: [Kelley 1973 MS Thesis, CA State Univ, Northridge]

Native

C. ambigua (S. Watson) Howell

Annual, glabrous
Stem spreading to erect
Leaf 1.5–6 cm, linear to ± spoon-shaped, ± cylindric
Inflorescence: panicle of umbel-like clusters, compact; bracts scarious; pedicels 1–3 mm, straight in fruit
Flower: sepals 2–5 mm, glabrous, margins white-scarious; petals 3–5, 2–5 mm, white; stamens 5–10
Fruit < calyx
Seeds 6–15, 1–2 mm wide, ± elliptic to ovate, at 10X shiny black, smooth
Ecology: Common. Sandy to silty soil
Elevation: < 1000 m.
Bioregional distribution: Desert
Distribution outside California: Arizona, nw Mexico
Flowering time: Jan–Apr

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