| General Information |
| Distribution | Native to Argentina and Uruguay, now widely naturalized.In the Hawaiian Islands,
naturalized on
O`ahu, Moloka`i, Maui, Hawai`i.
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Habit
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Perennial herbs 2-5 dm tall, from deep woody taproots, glandular puberulent and hirsute.
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Leaves
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Leaves oblong to oblanceolate, 2-6(-9) cm long, 0.4-2 cm wide, rugose, margins entire to sinuate, subsessile.
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Flowers
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Flowers sessile in terminal or lateral clusters of 2-5 bracteate, scorpioid cymes, peduncles 1-10 cm long; calyx persistent, the lobes linear to lanceolate, 2.5-5 mm long, spreading in fruit, glandular puberulent and sparsely hirsute; corolla blue, purple, or rarely white, 5-6 mm long, the tube ca. 5 mm long, sparsely hirsute externally.
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Fruit
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Fruit breaking up into 2 2-seeded nutlets 2-3 mm long, glabrous.
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