| General Information |
| Distribution | Native to North and South America and the tropics of the Old World.In the Hawaiian Islands,
naturalized on
Ni`ihau, Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Hawai`i.
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Habit
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Annual herb, 3‒100 cm tall, usually densely strigose.
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Leaves
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Leaves lanceolate, elliptic-lanceolate, or linear-lanceolate, usually 2‒10 cm long, 0.4‒2.5 cm wide, hispid-strigose and scabrous, margin serrulate, subsessile.
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Flowers
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Heads ca. 4‒6 mm in diameter; rays white, ca. 1 mm long.
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Fruit
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Achenes laterally compressed, angled, 2‒2.5 mm long.
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Chromosomes
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2n = 18, 22
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Contributor
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Nancy Khan
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