| General Information |
| Distribution | Nearly cosmopolitan, although presumably native to the Old World.In the Hawaiian Islands,
naturalized on
Midway, Pearl and Hermes, Laysan, French Frigate Shoals, Nihoa, Ni`ihau, Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Kaho`olawe, Hawai`i.
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Habit
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Prostrate, usually annual herb; stems 1‒2 dm long, profusely branched, succulent, often red tinged.
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Leaves
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Leaves alternate or subopposite, sessile, with an inconspicuous tuft of hairs ca. 1 mm long in the axil; blade cuneate to obovate, 10‒25(‒40) mm long, 5‒15(‒20) mm wide.
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Flowers
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Inflorescences a cymose cluster of 2‒6(‒30) flowers. Flowers with sepals 3‒4(‒8) mm long, keeled; petals (4)5, yellow, broadly obovate, 3‒10 mm long; stamens 7‒10(‒15); styles (4)5-branched.
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Fruit
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Fruit ca. 4 mm long, circumscissile at ⅓‒½ distance from base.
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Seeds
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Seeds black, glossy, ca. 0.5‒0.6 mm in diameter, surface granulate, cells of the testa with fine tubercles.
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Chromosomes
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2n = 14, 18, 36, 45, 52, 54.
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Contributor
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Nancy Khan
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