| 1. | This perennial herb produces several prostrate stems up to 40 centimeters long.
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| 2. | This perennial herb produces decumbent or prostrate stems from a caudex.
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| 3. | This aquatic plant has a branching, prostrate stem that roots at the nodes.
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| 4. | This perennial herb has spreading, prostrate stems that form a mat on the ground.
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| 5. | It radiates several prostrate stems in all directions, each only a few centimeters long.
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| 6. | These are perennial herbs with decumbent to prostrate stems up to 30 centimeters long.
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| 7. | The prostrate stems have bulges from which rhizoids form.
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| 8. | At the end of each prostrate stem is a puffy, woolly, rounded cluster of flowers.
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| 9. | Erect branching twigs emerge from long flexible prostrate stems, which are produced by single roots.
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| 10. | It is a perennial herb with spreading or prostrate stems up to 11 centimeters long.
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