| Country or region name |
Japan |
| Organism group |
plant |
| Order name |
Alismatales |
| Family name |
Alismataceae |
| Species name |
Sagittaria graminea |
| English common name |
grassy arrowhead, grass-leaf arrowhead, grass-leaved arrowhead,
Chinese arrowhead |
| Substantially same species (synonym) |
Sagittaria sinensis Sims. |
| Year of invasion or detection |
1970 |
| Native region |
North America |
| Situation of establishment |
Category 4: Settled after 1951, but not distributed all over the
country |
| Taxonomic description |
| |
| Expansion of distribution area |
| |
| Environmental impact |
| |
| Economic damage |
| |
| Reproduction |
| |
| Growth |
| |
| Countermeasure |
| |
| Writer's name and affiliation |
| Mitsuo Horita, NIAES |
