HABIT
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AN ERECT ANNUAL HERB, UP TO 1M HIGH.
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STEMS
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USUALLY UNBRANCHED, FINELY
HAIRY.
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LEAVES
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OPPOSITE, OVATE TO OVATE-LANCEOLATE, MARGINS COARSELY
SERRATE-CRENATE.
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FLOWERS
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INFLORESCENCE OF SEVERAL
SPACED, MANYFLOWERED VERTICILS WITH LONG THISTLE-LIKE CALYX TEETH. FLOWERS
SMALL, WHITE.
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FRUITS
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NUTLETS DARK BROWN,
OBLONG-OVOID, 1.5 MM LONG, SHINY.
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