Egeria densa, a
naturalized-in-Japan Argentina perennial plant, is growing wild in
the water. Stems extend long in the water, 1.5-3cm long,
linear-shaped, and generally in whorls of 4-5. This species is
originally dioecious; however, in Japan, only males exist.
Therefore, proliferation takes place employing vegetative
propagation. Bloom time: June-October.
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