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Photographer: Steve C. Garske
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Family Haloragaceae
Myriophyllum spicatum L.
Eurasian water-milfoil, European water-milfoil, spike water-milfoil
Myriophyllum: from Greek myrios, "numberless," and phyllon, "leaf," alluding to the many divisions of the submerged leaves of these aquatic plants
spicatum: spiked
Restricted Invasive - Eradicate!
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| Status: | Introduced - naturalized; ecologically invasive |
| Plant: | perennial, submersed aquatic; stems long, weak, to more than 7' long, branching at the water surface; from rhizomes |
| Flower: | 4-parted, no winter buds; inflorescence a spike held out of the water with flowers in whorls from the axils of the short bracts |
| Fruit: | 4 parted, with a mostly smooth surface |
| Leaf: | widely-spaced whorls of 4-5 leaves, short-stalked; finely, pinnately-divided into 14-20 pairs of thread-like leaflets of about the same length |
| Habitat: | water 3'-14' deep |
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