What is the reproductive method of Egeria in the US?

Egeria, commonly known as Brazilian waterweed, primarily reproduces through broken stem segments. This method allows the plant to quickly establish new growth when fragments of the stem break off and settle in the substrate of the water, forming new plants. This asexual reproductive strategy is advantageous in aquatic environments, where the ability to propagate rapidly and efficiently can help the plant spread and compete for resources.

While Egeria does also produce flowers and can theoretically reproduce by seed and pollen dispersal, these methods are not its main reproductive strategy in the U.S., especially in managed or disturbed aquatic systems where it is often found. Root division can occur as well, but it is less common compared to the fragmentation of stems. This focus on stem segment propagation highlights Egeria's adaptability and resilience in aquatic ecosystems.