| 1. | The achene is purple black, without bristles at the tip.
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| 2. | The fruit is a spiny achene about half a centimeter wide.
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| 3. | The woody vine bears fragrant white flowers and small green achenes.
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| 4. | The fruit is a tiny winged achene about a millimetre wide.
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| 5. | The fruit is a light brown achene about a millimeter long.
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| 6. | The fruit is a discoid achene just over a millimeter long.
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| 7. | The fruit is a hairy achene one to two millimeters long.
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| 8. | A plant can have buds, flowers, and achenes simultaneously.
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| 9. | They can be distinguished by the appearance of the mature achenes.
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| 10. | The fruit is a tiny achene less than a millimeter wide.
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