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| October 2008 at Tsukuba Botanical Garden |
October 2008 at Tsukuba Botanical Garden |
October 2008 at Tsukuba Botanical Garden |
| Family | Potamogetonaceae |
| Scientific name | Potamogeton lucens L. subsp. sinicus (Migo) H. Hara var. teganumensis Makino |
| Synonyms | Potamogeton dentatus Hagström; Potamogeton teganumensis (Makino) Makino |
| Common name | (Japanese common name) gashamoku (ガシャモク [meaning: unknown]) |
| (English common name) none | |
| Distribution | (Japan) Kyushu |
| (Other nations) China | |
| Habitat | Swamp, pond |
| Chromosomal number | 2n=52 |
| Description | Leaves 8-15cm long, 1.5-2.5cm wide, petioles 3-12mm long. Flowers inflorescences 2-3cm, 4 stamens, flowering in July to October. Fruits 2-2.5mm long. Water plants. Perennial plants. |
| Reference | Potamogeton lucens L. |
| Genetic diversity of an endangered aquatic plant, Potamogeton lucens subspecies sinicus | |
| Inferring the Origin of Potamogeton *inbaensis (Potamogetonaceae) Using Nuclear and Chloroplast DNA Sequences | |
| Cytological Studies in Genus Potamogeton of Japan | |
| Note | Rare species. |
| Extinct in Honshu of Japan. |
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| October 2008 at Tsukuba Botanical Garden |
October 2008 at Tsukuba Botanical Garden |
October 2008 at Tsukuba Botanical Garden |
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| October 2008 at Tsukuba Botanical Garden |
