| Family | Sparganiaceae |
| Scientific name | Sparganium erectum L. var. macrocarpum (Makino) H. Hara |
| Synonyms | Sparganium erectum L. subsp. stoloniferum (Buchanan-Hamilton ex Graebner) H. Hara var. macrocarpum (Makino) H. Hara; Sparganium macrocarpum Makino; Sparganium stoloniferum Buchanan-Hamilton ex Graebner var. macrocarpum (Makino) H. Hara |
| Common name | (Japanese common name) oh-mikuri (オオミクリ, 大実栗 [meaning: large maron fruits]), azuma mikuri (アズマミクリ, 東実栗 [meaning: Azuma maron fruits (Azuma = on old name of eastern Japan)]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (west of Kanto region) |
| (Other nations) Korea, China | |
| Habitat | Swamp |
| Chromosomal number | unknown |
| Description | Plants electing ca. 100-150cm tall. Leaves ca. 10mm wide. Flowers flowering in June to July. Perennial plants. |
| Reference | Sparganium stoloniferum var. macrocarpum (Makino) H. Hara |
| Note | Rare species. |
| June 2009 at Ohsaka City University Botanical Garden |
June 2009 at Ohsaka City University Botanical Garden |
| June 2009 at Ohsaka City University Botanical Garden |
June 2009 at Ohsaka City University Botanical Garden |
June 2009 at Ohsaka City University Botanical Garden |
| June 2009 at Ohsaka City University Botanical Garden |