Najas graminea
PlantsFamily: Hydrocharitaceae · Genus: Najas

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About
Najas graminea, also known as ricefield water-nymph is a species of aquatic plant found in freshwater habitats, especially still or slow-moving waters, like ponds and rice fields. It grows to a maximum length of 30 cm. The flowers are monoecious. The flowering season is from July to September.
Summary from Wikipedia
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Growing details and traits for Najas graminea in the Library.
No cultivars in the Library yet — the full profile above covers the species itself.