Comments
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Seeds contains about 25% oil suitable for illumination.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Comments
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This species is a cosmopolitan weed used as a medicinal plant and a source of oil. Cattle feeding on the plant develop tainted milk.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
provided by eFloras
Annual up to 70 cm tall, branched above, glabrous rarely very sparsely hairy. Basal leaves oblanceolate, 2-8 cm long, 1-2 cm broad, petiolate, toothed withering early; upper leaves lanceolate-oblong, 2-6 cm long, 0.5-2 cm broad, sessile, auricled at base, amplexicaul, dentate to subentire. Racemes 30-70-flo¬wered, up to 25 cm long in fruit. Flowers 3-5 mm across, white; pedicels 10-15 mm long in fruit, glabrous, spreading. Sepals c. 2 mm long, 1.3 mm broad. Petals 3-4.5 mm long, 1.5-2 mm broad. Stamens c. 1.5:2 mm long; anthers c. 0.5 mm. Siliculae ± orbicular. 1-2 cm in diam., deeply notched at the apex with subsessile stigma, glabrous; wing prominent, reticulately veined; septum c. 1.5 mm wide; seeds 4-6 in each locule, 1.5-2 mm long, ellipsoid, dark brown.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
provided by eFloras
Herbs annual, (9-)15-55(-80) cm tall, glabrous throughout, often glaucous, fetid when crushed. Stems erect, simple or branched above. Petiole of basal leaves 0.5-3 cm; leaf blade oblanceolate, spatulate, or obovate, 1-5 × 0.4-2.3 cm, base attenuate or cuneate, margin entire, repand, or coarsely toothed, apex rounded. Middle cauline leaves sessile, oblong, (0.5-)1.5-4(-8) × (0.2-)0.5-1.5(-2.5) cm, base sagittate or auriculate, margin dentate, repand, or entire, apex rounded, obtuse, or subacute. Fruiting pedicels (0.5-)0.9-1.3(-1.5) cm, slender, divaricate, straight or slightly curved upward. Sepals ovate or oblong, (1.5-)2-3(-3.3) × 1-1.5 mm, not saccate, margin white. Petals white, spatulate, (2.4-)3-4.5(-5) × (0.8-)1.1-1.6 mm, narrowed to a clawlike base ca. 1 mm, apex obtuse or emarginate. Filaments (1-)1.5-2 mm; anthers ovate, 0.3-0.5 mm. Ovules 6-16 per ovary. Fruit obovate or suborbicular, (0.6-)0.9-2 × (0.5-)0.7-2 cm, base obtuse or rounded, apex deeply emarginate and apical notch ca. 5 mm deep; wings 1-1.5 mm wide at base, 3.5-5 mm wide apically; style absent or 0.1-0.3 mm. Seeds blackish brown, ovoid, (1.2-)1.6-2(-2.3) × 1.1-1.3 mm, concentrically striate. Fl. and fr. Mar-Oct. 2n = 14*.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
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Temperate Eurasia.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
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Distribution: Almost throughout the Northern hemisphere.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
provided by eFloras
Throughout China except Guangdong, Hainan, and Taiwan [Afghanistan, Bhutan, India, Japan, Kashmir, Kazakhstan, Korea, Kyrgyzstan, Mongolia, Nepal, Pakistan, Russia, Sikkim, Tajikistan, Turkmenistan, Uzbekistan; Africa, SW Asia; introduced in Australia, North and South America].
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Elevation Range
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2100-4500 m
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Flower/Fruit
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Fl. Per.: April July.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
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Roadsides, grassy slopes, fields, waste places; 100-5000 m.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA