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(Upload on January 12 2021) [ 日本語 | English ]

Vallisneria L. (セキショウモ), eelgrass

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V. americana Michx. (アメリカセキショウモ) V. australis S. W. L. Jacobs et Les (オーストラリアセキショウモ)

V. denseserrulata (Makino) Makino (コウガイモ) V. gigantea Graebn. (オオセキショウモ) V. natans (Lour.) H. Hara (セキショウモ)

V. spiralis L. (セイヨウセキショウモ) V. × pseudorosulata S. Fujii et M.Maki (コウガイセキショウモ)

Vallisneria natans in Hokkaido

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Sekisyoumo (セキショウモ, 石菖藻), Asian tape grass Life form: aquatic, perennial forb Distribution: between Asia (including the whole of Japan) and Australia Habitat: lakes, ponds and streams Use: for aquarium Synonyms: Vallisneria gigantea auct. non Graebn. Vallisneria asiatica Miki var. biwaensis (Miki) H. Hara (ネジレモ), endemic to Biwako Lake and Yodo riverine system var. higoensis (Miki) H. Hara (ヒラモ), boader leaf than the type

♀ (female) ♂ (male)

1 2 3
[1-3] in the Po River of in Shibetsu wetland, eastern Hokkaido, on Augsut 28 2020.