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