| Family | Boraginaceae |
| Scientific name | Myosotis scorpioides L. |
| Synonyms | Myosotis adpressa Stokes; Myosotis aquatilis Lesson; Myosotis arvensis Salisbury, non (L.) Hill; Myosotis coronaria Dumortier; Myosotis hirta Desportes; Myosotis laxiflora Reichenbach; Myosotis multiflora Mérat; Myosotis palustris Hill; Myosotis scorpioides L. subsp. palustris (L.) Ehrhart |
| Common name | (Japanese common name) wasurena-gusa [forget-me-not weed] |
| (English common name) true forget-me-not, water forget-me-not | |
| Distribution | (Japan) Hokkaido, Honshu (north of Central region) |
| (Other nations) [native] Russia, Europe, Mongolia | |
| Chromosomal number | 2n=66 |
| Description | Plants 10-50cm. Flowers blue 8mm, flowering in May to July (and also in Autumn). Annual or winter annual plants. |
| Reference | Myosotis scorpioides L. |
| Myosotis scorpioides L. | |
| Myosotis L. | |
| Uracil compounds and use thereof (US Patent 6403534/2002) | |
| Herbicidal composition for upland farming and weeding method (US Patent 5635448/1997) | |
| Note | Naturalized plants (introduced as garden plants). |
| October 2007 at Nikko Botanical Garden |
October 2007 at Nikko Botanical Garden |
October 2007 at Nikko Botanical Garden |
| October 2007 at Nikko Botanical Garden |
October 2007 at Nikko Botanical Garden |