| General Information |
| Distribution | Native to North America from Nebraska, Colorado, and Arizona south to Mexico and east to Louisiana and Florida.In the Hawaiian Islands,
naturalized on
Kure, Kaua`i, O`ahu, Moloka`i, Maui, Hawai`i.
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Habit
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Taprooted, glandular villous annual or short lived perennial herbs 1-6 dm tall; stems erect or often decumbent toward base, unbranched or more often branched.
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Leaves
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Leaves oblong to oblanceolate, 2-8 cm long, 0.4-3 cm wide, entire to coarsely toothed or pinnately lobed, sessile and often clasping the stem, sometimes the lowermost tapering to broad petioles.
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Flowers
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Heads on peduncles 5-15 cm long, radiate; receptacle with bristles ca. twice as long as achenes; ray florets 6-10 per head, rays red, tipped with yellow, 12-20 mm long; disk corollas reddish purple above, yellow below, 6-7 mm long.
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Fruit
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Achenes ca. 2 mm long, hirsute at base.
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Chromosomes
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2n = 34, 36, 68.
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